Document:

EX-10.4

 Exhibit 10.4 

FRONTIER GROUP HOLDINGS, INC. 

INDEMNIFICATION AGREEMENT 

This Indemnification Agreement (“Agreement”) is made as of
                    , 20     by and between Frontier Group Holdings, Inc., a Delaware corporation (the
“Company”), and                      (“Indemnitee”). [This Agreement supersedes and replaces any and
all previous Agreements between the Company and Indemnitee covering the subject matter of this Agreement.] 
 RECITALS 

WHEREAS, highly competent persons have become more reluctant to serve publicly-held corporations as directors or officers or in other
capacities unless they are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and actions against them arising out of their service to and activities on behalf of the corporation; 

WHEREAS, the Board of Directors of the Company (the “Board”) has determined that, in order to attract and retain
qualified individuals, the Company will attempt to maintain on an ongoing basis, at its sole expense, liability insurance to protect persons serving the Company and its subsidiaries from certain liabilities. Although the furnishing of such insurance
has been a customary and widespread practice among United States-based corporations and other business enterprises, the Company believes that, given current market conditions and trends, such insurance may be available to it in the future only at
higher premiums and with more exclusions. At the same time, directors, officers and other persons in service to corporations or business enterprises are being increasingly subjected to expensive and time-consuming litigation relating to, among other
things, matters that traditionally would have been brought only against the Company or business enterprise itself. The Bylaws, as amended from time to time (the “Bylaws”), and the Amended and Restated Certificate of
Incorporation of the Company (the “Certificate of Incorporation”) require indemnification of the officers and directors of the Company. Indemnitee may also be entitled to indemnification pursuant to the General Corporation
Law of the State of Delaware (the “DGCL”). The Bylaws, the Certificate of Incorporation and the DGCL expressly provide that contracts may be entered into between the Company and members of the board of directors, officers and
other persons with respect to indemnification; 
 WHEREAS, the uncertainties relating to such insurance and to indemnification have
increased the difficulty of attracting and retaining such persons; 
 WHEREAS, the Board has determined that the increased difficulty in
attracting and retaining such persons is detrimental to the best interests of the Company and its stockholders and that the Company should act to assure such persons that there will be increased certainty of such protection in the future; 

WHEREAS, it is reasonable, prudent and necessary for the Company contractually to obligate itself to indemnify, and to advance expenses on
behalf of, such persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the Company free from undue concern that they will not be so indemnified; 

 WHEREAS, this Agreement is a supplement to and in furtherance of the Bylaws, the Certificate of
Incorporation and any resolutions adopted pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder; [and] 

WHEREAS, Indemnitee does not regard the protection available under the Bylaws, the Certificate of Incorporation and insurance as adequate in
the present circumstances, and may not be willing to serve as an officer or director without adequate protection, and the Company desires Indemnitee to serve in such capacity. Indemnitee is willing to serve, continue to serve and to take on
additional service for or on behalf of the Company on the condition that he or she be so indemnified; [and] 
 [WHEREAS, Indemnitee is a
representative of                     , a limited partnership (the “Fund”), and has certain rights to indemnification and/or
insurance provided by the Fund which Indemnitee and the Fund intend to be secondary to the primary obligation of the Company to indemnify Indemnitee as provided herein, with the Company’s acknowledgement and agreement to the foregoing being a
material condition to Indemnitee’s willingness to serve on the Board.] 
 NOW, THEREFORE, in consideration of the premises and the
covenants contained herein, the Company and Indemnitee do hereby covenant and agree as follows: 

Section 1.    Services to the Company. Indemnitee agrees to serve as a director, officer, employee or agent of
the Company, as applicable, or, at the request of the Company, as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, trust or other enterprise, as applicable. Indemnitee may at any time and for any
reason resign from such position (subject to any other contractual obligation or any obligation imposed by operation of law), in which event the Company shall have no obligation under this Agreement to continue Indemnitee in such position. This
Agreement shall not be deemed an employment contract between the Company (or any of its subsidiaries or any Enterprise) and Indemnitee. Indemnitee specifically acknowledges that Indemnitee’s employment with the Company (or any of its
subsidiaries or any Enterprise), if any, is at will, and the Indemnitee may be discharged at any time for any reason, with or without cause, except as may be otherwise provided in any written employment contract between Indemnitee and the Company
(or any of its subsidiaries or any Enterprise), other applicable formal severance policies duly adopted by the Board, or, with respect to service as a director or officer of the Company, by the Certificate of Incorporation, the Bylaws and the DGCL.
The foregoing notwithstanding, this Agreement shall continue in force after Indemnitee has ceased to serve as a director, officer, employee or agent of the Company, as applicable, or, at the request of the Company, as a director, officer, employee,
agent or fiduciary of another corporation, partnership, joint venture, trust or other enterprise, as applicable, as provided in Section 16 hereof. 

Section 2.    Definitions. As used in this Agreement: 

  
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 (a)    References to “agent” shall mean any person
who is or was a director, officer or employee of the Company or a subsidiary of the Company or other person authorized by the Company to act for the Company, to include such person serving in such capacity as a director, officer, employee, fiduciary
or other official of another corporation, partnership, limited liability company, joint venture, trust or other enterprise at the request of, for the convenience of, or to represent the interests of the Company or a subsidiary of the Company. 

(b)    A “Change in Control” shall be deemed to occur upon the earliest to occur after the date of
this Agreement of any of the following events: 
 i.    Acquisition of Stock by Third Party. Any Person (as defined
below) is or becomes the Beneficial Owner (as defined below), directly or indirectly, of securities of the Company representing fifteen percent (15%) or more of the combined voting power of the Company’s then outstanding securities unless the
change in relative Beneficial Ownership of the Company’s securities by any Person results solely from a reduction in the aggregate number of outstanding shares of securities entitled to vote generally in the election of directors; 

ii.    Change in Board of Directors. During any period of two (2) consecutive years (not including any period prior
to the execution of this Agreement), individuals who at the beginning of such period constitute the Board, and any new director (other than a director designated by a person who has entered into an agreement with the Company to effect a transaction
described in Sections 2(b)(i), 2(b)(iii) or 2(b)(iv)) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds (2/3) of the
directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute at least a majority of the members of the Board; 

iii.    Corporate Transactions. The effective date of a merger or consolidation of the Company with any other entity,
other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior to such merger or consolidation continuing to represent (either by remaining outstanding or by being converted into voting
securities of the surviving entity) more than fifty-one percent (51%) of the combined voting power of the voting securities of the surviving entity outstanding immediately after such merger or consolidation
and with the power to elect at least a majority of the board of directors or other governing body of such surviving entity; 

iv.    Liquidation. The approval by the stockholders of the Company of a complete liquidation of the Company or an
agreement for the sale or disposition by the Company of all or substantially all of the Company’s assets; and 

v.    Other Events. There occurs any other event of a nature that would be required to be reported in response to Item
6(e) of Schedule 14A of Regulation 14A (or a response to any similar item on any similar schedule or form) promulgated under the Exchange Act (as defined below), whether or not the Company is then subject to such reporting requirement. 

  
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 For purposes of this Section 2(b), the following terms shall have the following meanings: 

(A)    “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended
from time to time. 
 (B)    “Person” shall have the meaning as set forth in
Sections 13(d) and 14(d) of the Exchange Act; provided, however, that Person shall exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee benefit plan of the Company, and
(iii) any corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company. 

(C)    “Beneficial Owner” shall have the meaning given to such term in Rule 13d-3 under the Exchange Act; provided, however, that Beneficial Owner shall exclude any Person otherwise becoming a Beneficial Owner by reason of the stockholders of the Company approving a merger of
the Company with another entity. 
 (c)    “Corporate Status” describes the status of a person
who is or was a director, trustee, partner, managing member, officer, employee, agent or fiduciary of the Company or of any other corporation, limited liability company, partnership or joint venture, trust or other enterprise which such person is or
was serving at the request of the Company. 
 (d)    “Disinterested Director” shall mean a
director of the Company who is not and was not a party to the Proceeding in respect of which indemnification is sought by Indemnitee. 

(e)    “Enterprise” shall mean the Company and any other corporation, limited liability company,
partnership, joint venture, trust or other enterprise of which Indemnitee is or was serving at the request of the Company as a director, officer, trustee, partner, managing member, employee, agent or fiduciary. 

(f)    “Expenses” shall include all reasonable attorneys’ fees, retainers, court costs,
transcript costs, fees of experts and other professionals, witness fees, travel expenses, duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, fax transmission charges, secretarial services, any federal,
state, local or foreign taxes imposed on Indemnitee as a result of the actual or deemed receipt of any payments under this Agreement, ERISA excise taxes and penalties, and all other disbursements, obligations or expenses of the types customarily
incurred in connection with, or as a result of, prosecuting, defending, preparing to prosecute or defend, investigating, being or preparing to be a deponent or witness in, or otherwise participating in, a Proceeding. Expenses also shall include
(i) Expenses incurred in connection with any appeal resulting from any Proceeding, including without limitation the premium, security for, and other costs relating to any cost bond, supersedeas bond or other appeal bond or its equivalent, and
(ii) expenses incurred in connection with recovery under any directors’ and officers’ liability insurance policies maintained by the Company, regardless of 

  
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whether the Indemnitee is ultimately determined to be entitled to such indemnification, advancement or Expenses or insurance recovery, as the case may be, and (iii) for purposes of Section
14(d) only, Expenses incurred by or on behalf of Indemnitee in connection with the interpretation, enforcement or defense of Indemnitee’s rights under this Agreement, by litigation or otherwise. The parties agree that for the purposes of any
advancement of Expenses for which Indemnitee has made written demand to the Company in accordance with this Agreement, all Expenses included in such demand that are certified by affidavit of Indemnitee’s counsel as being reasonable shall be
presumed conclusively to be reasonable. Expenses, however, shall not include amounts paid in settlement by Indemnitee or the amount of judgments or fines against Indemnitee. 

(g)    “Independent Counsel” shall mean a law firm, or a member of a law firm, that is experienced
in matters of corporation law and neither presently is, nor in the past five (5) years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either such party (other than with respect to matters
concerning the Indemnitee under this Agreement, or of other indemnitees under similar indemnification agreements), or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder. Notwithstanding the foregoing,
the term “Independent Counsel” shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee in an
action to determine Indemnitee’s rights under this Agreement. The Company agrees to pay the reasonable fees and expenses of the Independent Counsel referred to above and to fully indemnify such counsel against any and all Expenses, claims,
liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. 
 (h)    The
term “Proceeding” shall include any threatened, pending or completed action, suit, claim, counterclaim, cross claim, arbitration, mediation, alternate dispute resolution mechanism, investigation, inquiry, administrative
hearing or any other actual, threatened or completed proceeding, whether brought in the right of the Company or otherwise and whether of a civil, criminal, administrative, regulatory, legislative or investigative (formal or informal) nature,
including any appeal therefrom, in which Indemnitee was, is or will be involved as a party, potential party, non-party witness or otherwise by reason of the fact that Indemnitee is or was a director or officer
of the Company, by reason of any action taken by him or her (or a failure to take action by him or her) or of any action (or failure to act) on his or her part while acting pursuant to his or her Corporate Status, in each case whether or not serving
in such capacity at the time any liability or Expense is incurred for which indemnification, reimbursement or advancement of Expenses can be provided under this Agreement. If the Indemnitee believes in good faith that a given situation may lead to
or culminate in the institution of a Proceeding, this shall be considered a Proceeding under this paragraph. 

(i)    Reference to “other enterprise” shall include employee benefit plans; references to “fines”
shall include any excise tax assessed with respect to any employee benefit plan; references to “serving at the request of the Company” shall include any service as a director, officer, employee or agent of the Company which imposes duties
on, or involves services by, such director, officer, employee or agent with respect to an employee benefit plan, its participants or beneficiaries; and a person who acted in good faith and in a manner he or she

  
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reasonably believed to be in the best interests of the participants and beneficiaries of an employee benefit plan shall be deemed to have acted in manner “not opposed to the best interests
of the Company” as referred to in this Agreement. 
 Section 3.    Indemnity in Third-Party
Proceedings. The Company shall indemnify Indemnitee in accordance with the provisions of this Section 3 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding, other than a Proceeding by or in the right
of the Company to procure a judgment in its favor. Pursuant to this Section 3, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses, judgments, fines and amounts paid in settlement (including
all interest, assessments and other charges paid or payable in connection with or in respect of such Expenses, judgments, fines and amounts paid in settlement) actually and reasonably incurred by Indemnitee or on his or her behalf in connection with
such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company and, in the case of a criminal Proceeding had no
reasonable cause to believe that his or her conduct was unlawful. The parties hereto intend that this Agreement shall provide to the fullest extent permitted by law for indemnification in excess of that expressly permitted by statute, including,
without limitation, any indemnification provided by the Certificate of Incorporation, the Bylaws, vote of its stockholders or disinterested directors or applicable law. 

Section 4.    Indemnity in Proceedings by or in the Right of the Company. The Company shall indemnify
Indemnitee in accordance with the provisions of this Section 4 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding by or in the right of the Company to procure a judgment in its favor. Pursuant to this
Section 4, Indemnitee shall be indemnified to the fullest extent permitted by applicable law against all Expenses actually and reasonably incurred by him or her or on his or her behalf in connection with such Proceeding or any claim, issue or
matter therein, if Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company. No indemnification for Expenses shall be made under this Section 4 in respect of any
claim, issue or matter as to which Indemnitee shall have been finally adjudged by a court to be liable to the Company, unless and only to the extent that the Delaware Court of Chancery or any court in which the Proceeding was brought shall determine
upon application that, despite the adjudication of liability but in view of all the circumstances of the case, Indemnitee is fairly and reasonably entitled to indemnification. 

Section 5.    Indemnification for Expenses of a Party Who is Wholly or Partly Successful. Notwithstanding any
other provisions of this Agreement, to the fullest extent permitted by applicable law and to the extent that Indemnitee is a party to (or a participant in) and is successful, on the merits or otherwise, in any Proceeding or in defense of any claim,
issue or matter therein, in whole or in part, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him or her in connection therewith. If Indemnitee is not wholly successful in such Proceeding but is
successful, on the merits or otherwise, as to one or more but less than all claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him or her or on his or her
behalf in connection with or related to each successfully resolved claim, issue or 

  
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matter to the fullest extent permitted by law. For purposes of this Section and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or
without prejudice, shall be deemed to be a successful result as to such claim, issue or matter. 

Section 6.    Indemnification For Expenses of a Witness. Notwithstanding any other provision of this
Agreement, to the fullest extent permitted by applicable law and to the extent that Indemnitee is, by reason of his or her Corporate Status, a witness or otherwise asked to participate in any aspect of a Proceeding to which Indemnitee is not a
party, he or she shall be indemnified against all Expenses actually and reasonably incurred by him or her on his or her behalf in connection therewith. 

Section 7.    Partial Indemnification. If Indemnitee is entitled under any provision of this Agreement to
indemnification by the Company for some or a portion of Expenses, but not, however, for the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion thereof to which Indemnitee is entitled. 

Section 8.    Additional Indemnification. 

(a)    Notwithstanding any limitation in Sections 3, 4 or 5, the Company shall indemnify Indemnitee to the fullest extent
permitted by applicable law if Indemnitee is a party to or threatened to be made a party to or a participant in any Proceeding (including a Proceeding by or in the right of the Company to procure a judgment in its favor) against all Expenses,
judgments, fines and amounts paid in settlement (including all interest, assessments and other charges paid or payable in connection with or in respect of such Expenses, judgments, fines and amounts paid in settlement) actually and reasonably
incurred by or on behalf of Indemnitee in connection with the Proceeding. 
 (b)    For purposes of Section 8(a), the
meaning of the phrase “to the fullest extent permitted by applicable law” shall include, but not be limited to: 

i.    to the fullest extent permitted by the provision of the DGCL that authorizes or contemplates additional
indemnification by agreement, or the corresponding provision of any amendment to or replacement of the DGCL, and 

ii.    to the fullest extent authorized or permitted by any amendments to or replacements of the DGCL adopted after the
date of this Agreement that increase the extent to which a corporation may indemnify its officers and directors. 

Section 9.    Exclusions. Notwithstanding any provision in this Agreement, the Company shall not be obligated
under this Agreement to make any indemnification payment in connection with any claim made against Indemnitee: 

(a)    for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other
indemnity provision, except with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision; or 

  
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 (b)    for (i) an accounting of profits made from the purchase and sale
(or sale and purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of the Exchange Act (as defined in Section 2(b) hereof) or similar provisions of state statutory law or common law, or (ii) any reimbursement
of the Company by the Indemnitee of any bonus or other incentive-based or equity-based compensation or of any profits realized by the Indemnitee from the sale of securities of the Company, as required in each case under the Exchange Act (including
any such reimbursements that arise from an accounting restatement of the Company pursuant to Section 304 of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act”), or the payment to the Company of profits arising from
the purchase and sale by Indemnitee of securities in violation of Section 306 of the Sarbanes-Oxley Act); or 

(c)    except as provided in Section 14(d) of this Agreement, in connection with any Proceeding (or any part of any
Proceeding) initiated by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors, officers, employees or other indemnitees, unless (i) the Board authorized the Proceeding
(or any part of any Proceeding) prior to its initiation, (ii) such payment arises in connection with any mandatory counterclaim or cross-claim or affirmative defense brought or raised by Indemnitee in any Proceeding (or any part of any
Proceeding), or (iii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested in the Company under applicable law. 

Section 10.    Advances of Expenses. Notwithstanding any provision of this Agreement to the contrary (other
than Section 14(d)), the Company shall advance, to the extent not prohibited by law, the Expenses incurred by or on behalf of Indemnitee in connection with any Proceeding (or any part of any Proceeding) not initiated by Indemnitee, and such
advancement shall be made within thirty (30) days after the receipt by the Company of a statement or statements requesting such advances from time to time (which shall include invoices received by the Indemnitee in connection with such Expenses
but, in the case of invoices in connection with legal services, any references to legal work performed or to expenditures made that would cause Indemnitee to waive any privilege accorded by applicable law shall not be so included), whether prior to
or after final disposition of any Proceeding. Advances shall be unsecured and interest free. Advances shall be made without regard to Indemnitee’s ability to repay the Expenses and without regard to Indemnitee’s ultimate entitlement to
indemnification under the other provisions of this Agreement. In accordance with Section 14(d), advances shall include any and all reasonable Expenses incurred pursuing an action to enforce this right of advancement, including Expenses incurred
preparing and forwarding statements to the Company to support the advances claimed. The Indemnitee shall qualify for advances upon the execution and delivery to the Company of this Agreement, which shall constitute an undertaking providing that the
Indemnitee undertakes to repay the amounts advanced (without interest) to the extent that it is ultimately determined that Indemnitee is not entitled to be indemnified by the Company. No other form of undertaking shall be required other than the
execution of this Agreement. This Section 10 shall not apply to any claim made by Indemnitee for which indemnity is excluded pursuant to Section 9. 

Section 11.    Procedure for Notification and Defense of Claim. 

  
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 (a)    Indemnitee shall notify the Company in writing of any matter with
respect to which Indemnitee intends to seek indemnification or advancement of Expenses hereunder as soon as reasonably practicable following the receipt by Indemnitee of written notice thereof or Indemnitee’s becoming aware thereof. The written
notification to the Company shall include a description of the nature of the Proceeding and the facts underlying the Proceeding, in each case to the extent known to Indemnitee. To obtain indemnification under this Agreement, Indemnitee shall submit
to the Company a written request, including therein or therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine whether and to what extent Indemnitee is entitled to
indemnification following the final disposition of such Proceeding. The failure by Indemnitee to notify the Company hereunder will not relieve the Company from any liability which it may have to Indemnitee hereunder or otherwise than under this
Agreement, and any delay in so notifying the Company shall not constitute a waiver by Indemnitee of any rights under this Agreement, except to the extent (solely with respect to the indemnity hereunder) that such failure or delay materially
prejudices the Company. The Secretary of the Company shall, promptly upon receipt of such a request for indemnification, advise the Board in writing that Indemnitee has requested indemnification. 

(b)    The Company will be entitled to participate in the Proceeding at its own expense. 

(c)    The Company shall not settle any Proceeding (in whole or in part) if such settlement would impose any Expense,
judgment, liability, fine, penalty or limitation on Indemnitee which Indemnitee is not entitled to be indemnified hereunder without the Indemnitee’s prior written consent. 

Section 12.    Procedure Upon Application for Indemnification. 

(a)    Upon written request by Indemnitee for indemnification pursuant to Section 11(a), a determination, if required by
applicable law, with respect to Indemnitee’s entitlement thereto shall be made in the specific case: (i) if a Change in Control shall have occurred, by Independent Counsel in a written opinion to the Board, a copy of which shall be
delivered to Indemnitee; or (ii) if a Change in Control shall not have occurred, (A) by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (B) by a committee of Disinterested Directors
designated by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (C) if there are no such Disinterested Directors or, if such Disinterested Directors so direct, by Independent Counsel in a written
opinion to the Board, a copy of which shall be delivered to Indemnitee, or (D) if so directed by the Board, by the stockholders of the Company; and, if it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee
shall be made within ten (10) days after such determination. Indemnitee shall cooperate with the person, persons or entity making such determination with respect to Indemnitee’s entitlement to indemnification, including providing to such
person, persons or entity upon reasonable advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably available to Indemnitee and reasonably necessary to such determination.
Any costs or Expenses (including attorneys’ fees and disbursements) incurred by or on behalf of 

  
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Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company (irrespective of the determination as to Indemnitee’s entitlement to
indemnification) and the Company hereby indemnifies and agrees to hold Indemnitee harmless therefrom. The Company promptly will advise Indemnitee in writing with respect to any determination that Indemnitee is or is not entitled to indemnification,
including a description of any reason or basis for which indemnification has been denied. 
 (b)    In the event the
determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 12(a) hereof, the Independent Counsel shall be selected as provided in this Section 12(b). If a Change in Control shall not have occurred,
the Independent Counsel shall be selected by the Board, and the Company shall give written notice to Indemnitee advising him or her of the identity of the Independent Counsel so selected. If a Change in Control shall have occurred, the Independent
Counsel shall be selected by Indemnitee (unless Indemnitee shall request that such selection be made by the Board, in which event the preceding sentence shall apply), and Indemnitee shall give written notice to the Company advising it of the
identity of the Independent Counsel so selected. In either event, Indemnitee or the Company, as the case may be, may, within ten (10) days after such written notice of selection shall have been given, deliver to the Company or to Indemnitee, as
the case may be, a written objection to such selection; provided, however, that such objection may be asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent
Counsel” as defined in Section 2 of this Agreement, and the objection shall set forth with particularity the factual basis of such assertion. Absent a proper and timely objection, the person so selected shall act as Independent Counsel. If
such written objection is so made and substantiated, the Independent Counsel so selected may not serve as Independent Counsel unless and until such objection is withdrawn or the Delaware Court has determined that such objection is without merit. If,
within twenty (20) days after the later of submission by Indemnitee of a written request for indemnification pursuant to Section 11(a) hereof and the final disposition of the Proceeding, no Independent Counsel shall have been selected and
not objected to, either the Company or Indemnitee may petition the Delaware Court for resolution of any objection which shall have been made by the Company or Indemnitee to the other’s selection of Independent Counsel and/or for the appointment
as Independent Counsel of a person selected by such court or by such other person as such court shall designate, and the person with respect to whom all objections are so resolved or the person so appointed shall act as Independent Counsel under
Section 12(a) hereof. Upon the due commencement of any judicial proceeding or arbitration pursuant to Section 14(a) of this Agreement, Independent Counsel shall be discharged and relieved of any further responsibility in such capacity (subject
to the applicable standards of professional conduct then prevailing). 
 (c)    If the Company disputes a portion of the
amounts for which indemnification is requested, the undisputed portion shall be paid and only the disputed portion withheld pending resolution of any such dispute. 

Section 13.    Presumptions and Effect of Certain Proceedings. 

(a)    In making a determination with respect to entitlement to indemnification hereunder, the person or persons or entity
making such determination shall, to the fullest extent 

  
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not prohibited by law, presume that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a request for indemnification in accordance with Section 11(a) of
this Agreement, and the Company shall, to the fullest extent not prohibited by law, have the burden of proof to overcome that presumption in connection with the making by any person, persons or entity of any determination contrary to that
presumption. Neither the failure of the Company (including by its directors or Independent Counsel) to have made a determination prior to the commencement of any action pursuant to this Agreement that indemnification is proper in the circumstances
because Indemnitee has met the applicable standard of conduct, nor an actual determination by the Company (including by its directors or Independent Counsel) that Indemnitee has not met such applicable standard of conduct, shall be a defense to the
action or create a presumption that Indemnitee has not met the applicable standard of conduct. 
 (b)    Subject to
Section 14(e), if the person, persons or entity empowered or selected under Section 12 of this Agreement to determine whether Indemnitee is entitled to indemnification shall not have made a determination within sixty (60) days after
receipt by the Company of the request therefor, the requisite determination of entitlement to indemnification shall, to the fullest extent not prohibited by law, be deemed to have been made and Indemnitee shall be entitled to such indemnification,
absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a
prohibition of such indemnification under applicable law; provided, however, that such sixty (60)-day period may be extended for a reasonable time, not to exceed an additional thirty
(30) days, if the person, persons or entity making the determination with respect to entitlement to indemnification in good faith requires such additional time for the obtaining or evaluating of documentation and/or information relating
thereto; and provided, further, that the foregoing provisions of this Section 13(b) shall not apply (i) if the determination of entitlement to indemnification is to be made by the stockholders pursuant to Section 12(a) of this
Agreement and if (A) within fifteen (15) days after receipt by the Company of the request for such determination the Board has resolved to submit such determination to the stockholders for their consideration at an annual meeting thereof
to be held within seventy-five (75) days after such receipt and such determination is made thereat, or (B) a special meeting of stockholders is called within fifteen (15) days after such receipt for the purpose of making such
determination, such meeting is held for such purpose within sixty (60) days after having been so called and such determination is made thereat, or (ii) if the determination of entitlement to indemnification is to be made by Independent
Counsel pursuant to Section 12(a) of this Agreement. 
 (c)    The termination of any Proceeding or of any claim, issue
or matter therein, by judgment, order, settlement or conviction, or upon a plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to
indemnification or create a presumption that Indemnitee did not act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that
Indemnitee had reasonable cause to believe that his or her conduct was unlawful. 
 (d)    For purposes of any
determination of good faith, Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of 

  
 11 

 
account of the Enterprise, including financial statements, or on information supplied to Indemnitee by the directors or officers of the Enterprise in the course of their duties, or on the advice
of legal counsel for the Enterprise or on information or records given or reports made to the Enterprise by an independent certified public accountant or by an appraiser or other expert selected with reasonable care by the Enterprise. The provisions
of this Section 13(d) shall not be deemed to be exclusive or to limit in any way the other circumstances in which Indemnitee may be deemed to have met the applicable standard of conduct set forth in this Agreement. Whether or not the foregoing
provisions of this Section 13(d) are satisfied, it shall in any event be presumed that Indemnitee has at all times acted in good faith and in a manner reasonably believed to be in or not opposed to the best interests of the Company. 

(e)    The knowledge and/or actions, or failure to act, of any director, officer, trustee, partner, managing member,
fiduciary, agent or employee of the Enterprise shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 

Section 14.    Remedies of Indemnitee. 

(a)    Subject to Section 14(e), in the event that (i) a determination is made pursuant to Section 12 of this
Agreement that Indemnitee is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 10 of this Agreement, (iii) no determination of entitlement to indemnification
shall have been made pursuant to Section 12(a) of this Agreement within ninety (90) days after receipt by the Company of the request for indemnification, (iv) payment of indemnification is not made pursuant to Section 5, 6 or 7 or the
last sentence of Section 12(a) of this Agreement within ten (10) days after receipt by the Company of a written request therefor, (v) payment of indemnification pursuant to Section 3, 4 or 8 of this Agreement is not made within ten
(10) days after a determination has been made that Indemnitee is entitled to indemnification, or (vi) in the event that the Company or any other person takes or threatens to take any action to declare this Agreement void or unenforceable,
or institutes any litigation or other action or Proceeding designed to deny, or to recover from, the Indemnitee the benefits provided or intended to be provided to the Indemnitee hereunder, Indemnitee shall be entitled to an adjudication by a court
of his or her entitlement to such indemnification or advancement of Expenses. Alternatively, Indemnitee, at his or her option, may seek an award in arbitration to be conducted by a single arbitrator pursuant to the Commercial Arbitration Rules of
the American Arbitration Association. Indemnitee shall commence such proceeding seeking an adjudication or an award in arbitration within one hundred eighty (180) days following the date on which Indemnitee first has the right to commence such
proceeding pursuant to this Section 14(a); provided, however, that the foregoing clause shall not apply in respect of a proceeding brought by Indemnitee to enforce his or her rights under Section 5 of this Agreement. The Company
shall not oppose Indemnitee’s right to seek any such adjudication or award in arbitration. 
 (b)    In the event
that a determination shall have been made pursuant to Section 12(a) of this Agreement that Indemnitee is not entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 14 shall be conducted in all
respects as a de novo trial, or arbitration, on the merits and Indemnitee shall not be prejudiced by 

  
 12 

 
reason of that adverse determination. In any judicial proceeding or arbitration commenced pursuant to this Section 14 the Company shall have the burden of proving Indemnitee is not entitled
to indemnification or advancement of Expenses, as the case may be. 
 (c)    If a determination shall have been made
pursuant to Section 12(a) of this Agreement that Indemnitee is entitled to indemnification, the Company shall be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Section 14, absent (i) a
misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such
indemnification under applicable law. 
 (d)    The Company shall, to the fullest extent not prohibited by law, be
precluded from asserting in any judicial proceeding or arbitration commenced pursuant to this Section 14 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court or
before any such arbitrator that the Company is bound by all the provisions of this Agreement. It is the intent of the Company that, to the fullest extent permitted by law, the Indemnitee not be required to incur legal fees or other Expenses
associated with the interpretation, enforcement or defense of Indemnitee’s rights under this Agreement by litigation or otherwise because the cost and expense thereof would substantially detract from the benefits intended to be extended to the
Indemnitee hereunder. The Company shall, to the fullest extent permitted by law, indemnify Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within ten (10) days after receipt by the Company of a written request
therefor) advance, to the extent not prohibited by law, such Expenses to Indemnitee, which are incurred by or on behalf of Indemnitee in connection with any action brought by Indemnitee for indemnification or advancement of Expenses from the Company
under this Agreement or under any directors’ and officers’ liability insurance policies maintained by the Company if, in the case of indemnification, Indemnitee is wholly successful on the underlying claims; if Indemnitee is not wholly
successful on the underlying claims, then such indemnification shall be only to the extent Indemnitee is successful on such underlying claims or otherwise as permitted by law, whichever is greater. 

(e)    Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement of Indemnitee to
indemnification under this Agreement shall be required to be made prior to the final disposition of the Proceeding. 

Section 15.    Non-exclusivity; Survival of Rights; Insurance;
Subrogation. 
 (a)    The rights of indemnification and to receive advancement of Expenses as provided by this
Agreement (i) shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Certificate of Incorporation, the Bylaws, any agreement, a vote of stockholders or a resolution of
directors or otherwise, and (ii) shall be interpreted independently of, and without reference to, any other such rights to which Indemnitee may at any time be entitled. No amendment, alteration or repeal of this Agreement or of any provision
hereof shall limit or restrict any right of Indemnitee under this Agreement in respect of any action taken or omitted by such Indemnitee in his or her Corporate Status prior to such amendment, alteration or repeal. To the extent that a change in
Delaware law, whether by statute or judicial decision, permits greater indemnification or advancement of Expenses than 

  
 13 

 
would be afforded currently under the Bylaws, the Certificate of Incorporation and this Agreement, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater
benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right and remedy shall be cumulative and in addition to every other right and remedy given hereunder
or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the concurrent assertion or employment of any other right or remedy. 

(b)    To the extent that the Company maintains an insurance policy or policies providing liability insurance for
directors, officers, employees or agents of the Enterprise, Indemnitee shall be covered by such policy or policies in accordance with its or their terms to the maximum extent of the coverage available for any such director, officer, employee or
agent under such policy or policies. If, at the time of the receipt of a notice of a claim pursuant to the terms hereof, the Company has director and officer liability insurance in effect, the Company shall give prompt notice of such claim or of the
commencement of a Proceeding, as the case may be, to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter take all necessary or desirable action to cause such insurers to pay, on behalf of
the Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies. 

(c)    In the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to
all of the rights of recovery of Indemnitee, who shall execute all papers required and take all action necessary to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such
rights. 
 (d)    The Company shall not be liable under this Agreement to make any payment of amounts otherwise
indemnifiable (or for which advancement is provided hereunder) hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance policy, contract, agreement or otherwise. 

(e)    [The Company’s obligation to indemnify or advance Expenses hereunder to Indemnitee who is or was serving at
the request of the Company as a director, officer, trustee, partner, managing member, fiduciary, employee or agent of any other corporation, limited liability company, partnership, joint venture, trust, employee benefit plan or other enterprise
shall be reduced by any amount Indemnitee has actually received as indemnification or advancement of Expenses from such other corporation, limited liability company, partnership, joint venture, trust or other enterprise.]/[The Company hereby
acknowledges that Indemnitee has certain rights to indemnification, advancement of expenses and/or insurance provided by the Fund and certain of its affiliates (collectively, the “Fund Indemnitors”). The Company hereby agrees
(i) that it is the indemnitor of first resort (i.e., its obligations to Indemnitee are primary and any obligation of the Fund Indemnitors to advance expenses or to provide indemnification for the same expenses or liabilities incurred by
Indemnitee are secondary), (ii) that it shall be required to advance the full amount of Expenses incurred by Indemnitee and shall be liable for the full amount of all Expenses, judgments, penalties, fines and amounts paid in settlement to the extent
legally permitted and as required by the Certificate of Incorporation or Bylaws (or any agreement 

  
 14 

 
between the Company and Indemnitee), without regard to any rights Indemnitee may have against the Fund Indemnitors, and (iii) that it irrevocably waives, relinquishes and releases the Fund
Indemnitors from any and all claims against the Fund Indemnitors for contribution, subrogation or any other recovery of any kind in respect thereof. The Company further agrees that no advancement or payment by the Fund Indemnitors on behalf of
Indemnitee with respect to any claim for which Indemnitee has sought indemnification from the Company shall affect the foregoing and the Fund Indemnitors shall have a right of contribution and/or be subrogated to the extent of such advancement or
payment to all of the rights of recovery of Indemnitee against the Company. The Company and Indemnitee agree that the Fund Indemnitors are express third party beneficiaries of the terms hereof.] 

Section 16.    Duration of Agreement. This Agreement shall continue until and terminate upon the later of:
(a) ten (10) years after the date that Indemnitee shall have ceased to serve as a director, officer, employee or agent of the Company, as applicable, or, at the request of the Company, as a director, officer, employee, agent or fiduciary of
another corporation, partnership, joint venture, trust or other enterprise, as applicable, or (b) one (1) year after the final termination of any Proceeding then pending in respect of which Indemnitee is granted rights of indemnification or
advancement of Expenses hereunder and of any proceeding commenced (including any appeal thereof) by Indemnitee pursuant to Section 14 of this Agreement relating thereto. The indemnification and advancement of expenses rights provided by or
granted pursuant to this Agreement shall be binding upon and be enforceable by the parties hereto and their respective successors and assigns (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or
substantially all of the business or assets of the Company), shall continue as to an Indemnitee who has ceased to be a director, officer, employee or agent of the Company or of any other Enterprise, and shall inure to the benefit of Indemnitee and
his or her spouse, assigns, heirs, devisees, executors and administrators and other legal representatives. The Company shall require and shall cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all or
substantially all of the business or assets of the Company to, by written agreement, expressly assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession
had taken place. 
 Section 17.    Severability. If any provision or provisions of this Agreement shall be
held to be invalid, illegal or unenforceable for any reason whatsoever: (a) the validity, legality and enforceability of the remaining provisions of this Agreement (including without limitation, each portion of any Section of this Agreement
containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the fullest extent permitted by
law; (b) such provision or provisions shall be deemed reformed to the extent necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (c) to the fullest extent possible, the provisions
of this Agreement (including, without limitation, each portion of any Section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so
as to give effect to the intent manifested thereby. 
 Section 18.    Enforcement. 

  
 15 

 (a)    The Company expressly confirms and agrees that it has entered into
this Agreement and assumed the obligations imposed on it hereby in order to induce Indemnitee to serve as a director or officer of the Company, and the Company acknowledges that Indemnitee is relying upon this Agreement in serving as a director or
officer of the Company. 
 (b)    This Agreement constitutes the entire agreement between the parties hereto with
respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties hereto with respect to the subject matter hereof; provided, however, that this Agreement is a
supplement to and in furtherance of the Certificate of Incorporation, the Bylaws, any directors’ and officers’ insurance maintained by the Company and applicable law, and shall not be deemed a substitute therefor, nor to diminish or
abrogate any rights of Indemnitee thereunder and provided further, that the provisions of this Agreement shall apply retroactively as of the date such Indemnitee began service as a director, officer, employee or agent of the Company,
as applicable, or, at the request of the Company, as a director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, trust or other enterprise, as applicable. 

Section 19.    Modification and Waiver. No supplement, modification or amendment of this Agreement shall be
binding unless executed in writing by the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions of this Agreement nor shall any waiver constitute a continuing
waiver. 
 Section 20.    Notice by Indemnitee. Indemnitee agrees promptly to notify the Company in writing
upon being served with any summons, citation, subpoena, complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to indemnification or advancement of Expenses covered hereunder. The failure of
Indemnitee to so notify the Company shall not relieve the Company of any obligation which it may have to the Indemnitee under this Agreement or otherwise. 

Section 21.    Notices. All notices, requests, demands and other communications under this Agreement shall be
in writing and shall be deemed to have been duly given if (a) delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, (b) mailed by certified or registered mail with postage
prepaid, on the third business day after the date on which it is so mailed, (c) mailed by reputable overnight courier and receipted for by the party to whom said notice or other communication shall have been directed, or (d) sent by
facsimile transmission, with receipt of oral confirmation that such transmission has been received: 
 (a)    If to
Indemnitee, at the address indicated on the signature page of this Agreement, or such other address as Indemnitee shall provide to the Company. 

(b)    If to the Company to: 

Frontier Group Holdings, Inc. 

7001 Tower Road, Suite 102 

Denver, CO 80249 
 Attn: General
Counsel 

  
 16 

 
or to any other address as may have been furnished to Indemnitee by the Company. 

Section 22.    Contribution. To the fullest extent permissible under applicable law, if the indemnification
provided for in this Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by or on behalf of Indemnitee, whether for judgments, fines, penalties,
excise taxes, amounts paid or to be paid in settlement and/or for Expenses, in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and reasonable in light of all of the
circumstances of such Proceeding in order to reflect (i) the relative benefits received by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding; and/or (ii) the relative fault of the
Company (and its directors, officers, employees and agents) and Indemnitee in connection with such event(s) and/or transaction(s). 

Section 23.    Applicable Law and Consent to Jurisdiction. This Agreement and the legal relations among the
parties shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. Except with respect to any arbitration commenced by Indemnitee pursuant to Section 14(a) of
this Agreement, the Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or proceeding arising out of or in connection with this Agreement shall be brought only in the Chancery Court of the State of Delaware
(the “Delaware Court”), and not in any other state or federal court in the United States of America or any court in any other country, (ii) consent to submit to the exclusive jurisdiction of the Delaware Court for
purposes of any action or proceeding arising out of or in connection with this Agreement, (iii) appoint, to the extent such party is not otherwise subject to service of process in the State of Delaware, irrevocably CT Corporation as its agent
in the State of Delaware for acceptance of legal process in connection with any such action or proceeding against such party with the same legal force and validity as if served upon such party personally within the State of Delaware, (iv) waive
any objection to the laying of venue of any such action or proceeding in the Delaware Court, and (v) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the Delaware Court has been brought in an
improper or inconvenient forum. 
 Section 24.    Identical Counterparts. This Agreement may be executed in
one or more counterparts, each of which shall for all purposes be deemed to be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party against whom enforceability is sought
needs to be produced to evidence the existence of this Agreement. 
 Section 25.    Miscellaneous. The
headings of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 

  
 17 

 IN WITNESS WHEREOF, the parties have caused this Agreement to be signed as of the day and year
first above written. 
  

											
	FRONTIER GROUP HOLDINGS, INC.	 		 	INDEMNITEE
				
	By:	 	  
	 		 	  

		 	Name:	 		 		 	Name:	 	
		 	Title:	 		 		 	Address:	 	

  
  
  

  
 [Signature Page to
Indemnification Agreement] 

  
 18EX-10.5

 Exhibit 10.5 

Employment Agreement 

This Employment Agreement (the “Agreement”) is made by and between Frontier Airlines, Inc., a Colorado corporation (the
“Company”), and Barry L. Biffle (the “Executive” and, together with the Company, the “Parties”) effective as of March 15, 2016 (the “Effective Date”). This Agreement supersedes
in its entirety any agreement to which the Company is a party with respect to Executive’s employment with the Company, except for option agreements entered into between Executive and the Group. 

RECITALS 
 WHEREAS, the
Company desires to assure itself of the continued services of Executive by engaging Executive to perform services under the terms hereof; and 

WHEREAS, Executive desires to provide continued services to the Company on the terms herein provided. 

AGREEMENT 
 NOW,
THEREFORE, in consideration of the foregoing, and for other good and valuable consideration, including the respective covenants and agreements set forth below, the receipt and sufficiency of which are hereby acknowledged, the Parties hereto agree as
follows: 
  

	1.	Certain Definitions. 

 (a) “Affiliate” shall mean, with respect
to any Person, any other Person directly or indirectly controlling, controlled by, or under common control with, such Person where “control” shall have the meaning given such term under Rule 405 of the Securities Act of 1933, as amended.

 (b) “Agreement” shall have the meaning set forth in the preamble hereto. 

(c) “Annual Base Salary” shall have the meaning set forth in Section 3(a). 

(d) “Annual Bonus” shall have the meaning set forth in Section 3(b). 

(e) “Board” shall mean the Board of Directors of the Company or of any company to which the Company’s rights and
obligations under this Agreement are assigned pursuant to Section 10. 
 (f) “Cause” shall mean
(i) Executive’s gross negligence or willful misconduct in the performance of the duties and services required of Executive pursuant to this Agreement or any other written agreement between Executive and the Company;
(ii) Executive’s conviction of, or plea of guilty or nolo contendere to, a felony or crime involving moral turpitude (or any similar crime in any jurisdiction outside the United States); (iii) Executive’s willful refusal
to perform the duties and responsibilities required of Executive under this Agreement or as lawfully directed by the Board which remains uncorrected for thirty (30) days following written notice to Executive by the Company of such breach;
(iv) Executive’s material breach of any material 

  
 1 

 
provision of this Agreement, any confidential information or restrictive covenant agreement with the Company or corporate code or policy which remains uncorrected for thirty (30) days
following written notice to Executive by the Company of such breach; (v) any act of fraud, embezzlement, material misappropriation or dishonesty committed by Executive against the Company; or (v) any acts, omissions or statements by
Executive which the Company determines to be materially detrimental or damaging to the reputation, operations, prospects or business relations of the Company. For purposes of this Section 1(f), an act or failure to act shall be considered
“willful” only if done or omitted to be done without a good faith reasonable belief that such act or failure to act was in the best interests of the Company. 

(g) “Change in Control” shall mean (i) the acquisition by any person or group of affiliated or associated persons of
more than fifty percent (50%) of the outstanding capital stock of Group or the Company or voting securities representing more than fifty percent (50%) of the total voting power of outstanding securities of Group or the Company (other than
such an acquisition by a person or group that holds more than fifty percent (50%) of the outstanding capital stock of Group or the Company or voting securities representing more than fifty percent (50%) of the total voting power of
outstanding securities of Group or the Company, in each case, as of either the Effective Date or immediately prior to such acquisition); (ii) the consummation of a sale of all or substantially all of the assets of the Company to a third party;
(iii) the consummation of any merger involving Group or the Company in which, immediately after giving effect to such merger, less than a majority of the total voting power of outstanding stock of the surviving or resulting entity is then
“beneficially owned” (within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934, as amended) in the aggregate by the stockholders of Group or the Company, as applicable, immediately prior to such merger. For the avoidance
of doubt and notwithstanding anything herein to the contrary, in no event shall an acquisition, sale or other transaction constitute a “Change in Control” if: (w) its sole purpose is to change the form of ownership of the
Company or the state of the Company’s incorporation; (x) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such
transaction; (y) it is effected primarily for the purpose of financing the Company with cash (as determined by the Board without regard to whether such transaction is effectuated by a merger, equity financing or otherwise); or (z) it
constitutes, or includes sales of shares in connection with, the initial public offering of the Company’s common stock or the common stock of any Affiliate of the Company (including Group). 

(h) “COBRA” shall have the meaning set forth in Section 5(b)(iii). 

(i) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(j) “Company” shall, except as otherwise provided in Section 8(a), have the meaning set forth in the preamble hereto.

 (k) “Competing Business” shall mean a business conducted anywhere in the United States which is related to commercial
aviation or its supply chain or is otherwise competitive with any business which the Company conducts or has taken actions in anticipation of conducting at any time during the employment of Executive. 

  
 2 

 (l) “Confidential Information” shall have the meaning set forth in
Section 8(e). 
 (m) A “Constructive Termination” shall mean Executive’s resignation from employment with the
Company that is effective within one-hundred twenty (120) days after the occurrence, without Executive’s written consent, of any of the following: (i) a material diminution in Executive’s base salary that is not proportionately
applicable to other officers and key employees of the Company generally; (ii) a material diminution in Executive’s job responsibilities or duties inconsistent in any material respect with Executive’s duties or responsibilities in
effect immediately prior to such change, provided, that any change made solely as the result of the Company becoming a subsidiary or business unit of a larger company in a Change in Control shall not provide for Executive’s Constructive
Termination hereunder; (iii) the relocation of Executive’s direction to a facility or a location more than fifty (50) miles from Executive’s then-present location; or (iv) the failure by any successor entity or corporation
following a Change in Control to assume the obligations under this Agreement. Notwithstanding the foregoing, a resignation shall not constitute a “Constructive Termination” unless the condition giving rise to such resignation
continues uncured by the Company more than thirty (30) days following Executive’s written notice of such condition provided to the Company within sixty (60) days of the first occurrence of such condition and such resignation is
effective within thirty (30) days following the end of such notice period. 
 (n) “Date of Termination” shall mean
(i) if Executive’s employment is terminated due to Executive’s death, the date of Executive’s death; (ii) if Executive’s employment is terminated due to Executive’s Disability, the date determined pursuant to
Section 4(a)(ii); or (iii) if Executive’s employment is terminated pursuant to Section 4(a)(iii)-(vi) either the date indicated in the Notice of Termination or the date specified by the Company pursuant to Section 4(b),
whichever is earlier. 
 (o) “Disability” shall exist if, as a result of any physical or mental disability or impairment,
Executive is unable to perform, with reasonable accommodation, Executive’s material duties hereunder for a period of at least ninety (90) days in any consecutive period of one hundred eighty (180) days. 

(p) “Effective Date” shall have the meaning set forth in the preamble hereto. 

(q) “Equity Awards” shall have the meaning set forth in Section 6(a). 

(r) “Executive” shall have the meaning set forth in the preamble hereto. 

(s) “Flight Benefits” shall have the meaning set forth in Section 3(d). 

(t) “Group” shall mean Frontier Group Holdings, Inc., a Delaware corporation, or any successor thereto. 

(u) “Notice of Termination” shall have the meaning set forth in Section 4(b). 

(v) “Person” shall mean any individual, natural person, corporation (including any non-profit corporation), general
partnership, limited partnership, limited liability partnership, joint venture, estate, trust, company (including any company limited by shares, limited liability company or joint stock company), incorporated or unincorporated association,
governmental authority, firm, society or other enterprise, organization or other entity of any nature. 

  
 3 

 (w) “Release” shall have the meaning set forth in Section 5(b). 

(x) “Release Deadline Date” shall have the meaning set forth in Section 12(d). 

(y) “Section 409A” shall mean Section 409A of the Code and the Department of Treasury regulations and other interpretive
guidance issued thereunder, including without limitation any such regulations or other guidance that may be issued after the Effective Date. 

(z) “Separation from Service” shall have the meaning set forth in Section 12(b). 

(aa) “Target Bonus” shall have the meaning set forth in Section 3(b). 

(bb) “Term” shall have the meaning set forth in Section 2(b). 

(cc) “UATP” shall have the meaning set forth in Section 3(d). 

 

	2.	Employment. 

 (a) General. The Company shall continue to employ Executive
and Executive shall continue in the employ of the Company, for the period and in the position set forth in this Section 2, and upon the other terms and conditions herein provided. 

(b) Employment Term. The term of employment under this Agreement (as may be extended in accordance with this Section 2(b), the
“Term”) shall be for the period beginning on the Effective Date and ending on the fifth anniversary of the Effective Date, subject to earlier termination as provided in Section 4 hereof. The Term shall automatically be extended
for successive one year periods unless within ninety (90) days prior to the end of the then current Term either Party provides a written notice of non-renewal to the other Party. 

(c) Position and Duties. Executive shall serve as the President and Chief Executive Officer of the Company and as a member of the
Board. Executive shall continue to devote substantially all of his time and attention during normal business hours to the business of the Company, will continue act in the best interest of the Company while performing his duties for the Company and
will continue to perform with due care his duties and responsibilities for the Company. Executive’s duties will include those normally incidental to the position of President and Chief Executive Officer as well as whatever additional duties may
be assigned to him by the Board. Executive shall report to the Chairman of the Board. Executive agrees not to engage in any activity that materially interferes with the performance of Executive’s duties hereunder. During the Term, Executive
will not hold outside employment, provided, that it shall not be a violation of this Agreement for Executive (i) with prior written consent from the Board, to serve on the board of directors of one other company if such company is not
affiliated with commercial aviation or its supply chain or (ii) to manage or engage in other activities in connection with Executive’s personal investments; provided, further, that the foregoing permitted activities shall not
materially interfere with Executive’s duties hereunder. Executive acknowledges and agrees that Executives owes the Company a duty of loyalty and that the obligations described in this Agreement are in addition to, and not in lieu of, the
obligations Executive owes the Company under the common law. 

  
 4 

	3.	Compensation and Related Matters. 

 (a) Annual Base Salary. During the
Term, Executive shall receive a base salary at a rate of four hundred seventy-five thousand dollars ($475,000) per annum (the “Annual Base Salary”), which shall be paid in accordance with the customary payroll practices and
procedures of the Company. Such Annual Base Salary shall be reviewed by the Board from time to time but no less frequently than annually. 

(b) Bonus. During the Term, Executive will continue to be eligible to earn a discretionary cash performance bonus (an “Annual
Bonus”) under the Company’s incentive bonus program. Executive’s annual bonus opportunity shall continue to be one hundred percent (100%) of the Annual Base Salary (the “Target Bonus”) at the target
achievement and two hundred percent (200%) of the Annual Base Salary at the maximum achievement. The amount of any Annual Bonus payable under the incentive bonus program may thus vary from zero percent (0%) to two hundred percent (200%), based
on the achievement as determined by the Board of individual and Company performance goals to be set by the Board. The amount of any Annual Bonus shall be payable on such date as is determined by the Board in its sole discretion as soon as reasonably
practicable after the final audited financial performance information for the Company is available for the calendar year with respect to which such Annual Bonus relates. Notwithstanding any other provision of this Section 3, no bonus shall be
payable with respect to any calendar year unless Executive remains continuously employed with the Company during the period beginning on the Effective Date and ending on the applicable bonus payment date except as otherwise provided in
Section 5(b)(iv) and Section 5(c)(iv). 
 (c) Benefits. During the Term, Executive may continue to participate in such
employee and executive benefit plans and programs as the Company may from time to time offer generally to provide to its employees and executives, pursuant to the terms and eligibility requirements of those plans. 

(d) Flight Benefits. During the Term, Executive shall be eligible to receive flight benefits on Frontier Airlines in the form of a
Universal Air Travel Plan, Inc. (“UATP”) card made available once per twelve month period that provides for travel solely on Frontier Airlines in the amount of twenty thousand dollars ($20,000) that must be used, if at all, within
twelve months of the date the UATP card is issued (the “Flight Benefits”). 
 (e) Vacation. During the Term,
Executive shall continue to be entitled to no less than three (3) weeks of annual paid vacation, subject to the Company’s vacation policy, as it may be amended from time to time. Any vacation shall be taken at the reasonable and mutual
convenience of the Company and Executive. Holidays shall be provided in accordance with Company policy, as in effect from time to time. 

(f) Business Expenses. During the Term, the Company shall continue to reimburse Executive for all reasonable, documented, out-of-pocket
travel and other business expenses incurred by Executive in the performance of Executive’s duties to the Company in accordance with the Company’s applicable expense reimbursement policies and procedures. 

  
 5 

	4.	Termination. 

 Executive’s employment hereunder shall be “at-will”
and may be terminated by the Company or Executive, as applicable, at any time for any reason, with or without prior notice, without any breach of this Agreement under the following circumstances: 

(a) Circumstances. 

(i) Death. Executive’s employment hereunder shall terminate upon Executive’s death. 

(ii) Disability. If Executive incurs a Disability, the Company may give Executive written notice of its intention to
terminate Executive’s employment. In that event, Executive’s employment with the Company shall terminate, effective on the later of the thirtieth (30th) day after receipt of such
notice by Executive or the date specified in such notice, provided, that within the thirty (30) day period following receipt of such notice, Executive shall not have returned to full-time performance of Executive’s duties hereunder.

 (iii) Termination for Cause. The Company may terminate Executive’s employment for Cause. 

(iv) Termination without Cause. The Company may terminate Executive’s employment without Cause. 

(v) Resignation from the Company Deemed a Constructive Termination. Executive may resign Executive’s employment
with the Company under circumstances deemed a Constructive Termination. 
 (vi) Resignation from the Company Not Deemed a
Constructive Termination. Executive may resign Executive’s employment with the Company under circumstances not deemed a Constructive Termination. 

(b) Notice of Termination. Any termination of Executive’s employment by the Company or by Executive under this Section 4
(other than termination pursuant to paragraph (a)(i)) shall be communicated by a written notice to the other party hereto (i) indicating the specific termination provision in this Agreement relied upon, (ii) setting forth in reasonable
detail the facts and circumstances claimed to provide a basis for termination of Executive’s employment under the provision so indicated unless the termination provision relied upon is Section 4(a)(iv) or (vi), and (iii) specifying a
Date of Termination which, if submitted by Executive, shall be at least thirty (30) days following the date of such notice (a “Notice of Termination”); provided, however, that in the event that Executive delivers a
Notice of Termination to the Company, the Company may, in its sole discretion, change the Date of Termination to any date that occurs following the date of Company’s receipt of such Notice of Termination and is prior to the date specified in
such Notice of Termination. A Notice of 

  
 6 

 
Termination submitted by the Company may provide for a Date of Termination on the date Executive receives the Notice of Termination, or any date thereafter elected by the Company in its sole
discretion. The failure by the Company to set forth in the Notice of Termination any fact or circumstance which contributes to a showing of Cause shall not waive any right of the Company hereunder or preclude the Company from asserting such fact or
circumstance in enforcing the Company’s rights hereunder. 
 (c) Deemed Resignation. Upon termination of Executive’s
employment for any reason, Executive shall be deemed to have resigned from all offices and directorships, if any, then held with the Company or any of its Affiliates. 

(d) Forfeitures. In the event that Executive resigns pursuant to Section 4(a)(vi) hereof under circumstances not deemed a
Constructive Termination pursuant to Section 4(a)(v) hereof, (i) Executive shall forfeit any unused portion of any UATP card and (ii) Executive shall forfeit any unpaid Annual Bonus. 

 

	5.	Company Obligations Upon Termination of Employment. 

 (a) In General. Upon
a termination of Executive’s employment for any reason, Executive (or Executive’s estate) shall be entitled to receive: (i) any portion of Executive’s Annual Base Salary through the Date of Termination not theretofore paid,
(ii) any expenses owed to Executive under Section 3(f), and (iii) any amount arising from Executive’s participation in, or benefits under, any employee benefit plans, programs or arrangements under Section 3(c), which
amounts shall be payable in accordance with the terms and conditions of such employee benefit plans, programs or arrangements. Except as otherwise set forth in Sections 5(b) and 5(c) below, the payments and benefits described in this
Section 5(a) shall be the only payments and benefits payable in the event of termination of Executive’s employment for any reason. 

(b) Termination Apart from a Change in Control. In the event of termination of Executive’s employment by the Company without Cause
pursuant to Section 4(a)(iv) hereof, other than within the twelve (12) month period following a Change in Control, in addition to the payments and benefits described in Section 5(a) above, subject to Section 12 and
Section 5(d) and subject to Executive’s delivery to the Company of a waiver and release of claims agreement in a form substantially comparable to Exhibit A, attached hereto, and in accordance with Section 12(d) (a
“Release”), that becomes effective and irrevocable within sixty (60) days following the Date of Termination: 

(i) The Company shall pay to Executive, in a single lump-sum payment within sixty (60) days following the Date of
Termination, an amount equal to one (1) times the Annual Base Salary plus the Target Bonus for the calendar year in which the Date of Termination occurs. 

(ii) The Company shall continue to provide Executive with the Flight Benefits for the one (1)-year period following the Date
of Termination. 
 (iii) If Executive elects to receive continued healthcare coverage pursuant to the Consolidated Omnibus
Budget Reconciliation Act of 1985, as amended (“COBRA”), 

  
 7 

 
the Company shall directly pay, or at the Company’s election reimburse Executive for, the COBRA premiums for Executive and Executive’s covered dependents during the period commencing on
Executive’s termination of employment and ending upon the earliest of (X) the first anniversary of the Date of Termination, (Y) the date that Executive and/or Executive’s covered dependents, as applicable, become no longer
eligible for COBRA or (Z) the date Executive becomes eligible to receive healthcare coverage from a subsequent employer. 

(iv) Executive shall be eligible to receive a prorated portion of the Annual Bonus Executive would have received with respect
to the calendar year during which the Date of Termination occurs had he remained in continuous employment through the date of payment, with the amount determined based on actual performance against applicable metrics and subject to discretionary
adjustments permitted under the applicable incentive bonus program and with proration determined by dividing the number of days Executive served hereunder in the calendar year during which the Date of Termination occurred by the total number of days
in the calendar year in which the Date of Termination occurred, in each case, as determined by the Board. Any such prorated Annual Bonus shall be payable on the regularly scheduled payment date under the Company’s incentive bonus program (in
the calendar year following the calendar year in which the Date of Termination occurs). 
 (c) Termination Within 12 Months Following a
Change in Control. In the event of termination of Executive’s employment by the Company without Cause pursuant to Section 4(a)(iv) hereof or Executive’s Constructive Termination pursuant to Section 4(a)(v) hereof, in each
case within twelve (12) months following a Change in Control, in addition to the payments and benefits described in Section 5(a) above, subject to Section 12 and Section 5(d) and subject to Executive’s delivery to the
Company of a Release in accordance with Section 12(d) that becomes effective and irrevocable within sixty (60) days following the Date of Termination: 

(i) The Company shall pay to Executive, in a single lump-sum payment within sixty (60) days of the Date of Termination,
an amount equal to two (2) times (A) the Annual Base Salary plus (B) the Target Bonus for the calendar year in which the Date of Termination occurs. 

(ii) The Company shall continue to provide Executive with the Flight Benefits for the two (2)-year period following the Date
of Termination. 
 (iii) If Executive elects to receive continued healthcare coverage pursuant to COBRA, the Company shall
directly pay, or at the Company’s election reimburse Executive for, the COBRA premiums for Executive and Executive’s covered dependents during the period commencing on Executive’s termination of employment and ending upon the earliest
of (X) the second anniversary of the Date of Termination, (Y) the date that Executive and/or Executive’s covered dependents, as applicable, become no longer eligible for COBRA or (Z) the date Executive becomes eligible to receive
healthcare coverage from a subsequent employer. 

  
 8 

 (iv) Executive shall be eligible to receive a prorated portion of the Annual
Bonus Executive would have received with respect to the calendar year during which the Date of Termination occurs had he remained in continuous employment through the date of payment, with the amount determined based on actual performance against
applicable metrics and subject to discretionary adjustments permitted under the applicable incentive bonus program and with proration determined by dividing the number of days Executive served hereunder in the calendar year during which the Date of
Termination occurred by the total number of days in the calendar year in which the Date of Termination occurred, in each case, as determined by the Board. Any such prorated Annual Bonus shall be payable on the regularly scheduled payment date under
the Company’s incentive bonus program (in the calendar year following the calendar year in which the Date of Termination occurs). 

(v) Each outstanding equity award, including, without limitation, each stock option, restricted stock unit and restricted
stock award, held by Executive shall automatically become vested and, if applicable, exercisable and any restrictions thereon shall immediately lapse, in each case, with respect to one hundred percent (100%) of the then unvested shares subject
to such equity award. 
 (d) Post Termination Obligations. Notwithstanding any other provision of this Agreement, no payment shall be
made pursuant to Sections 5(b) or 5(c) following the date Executive first violates any of the restrictive covenants set forth in Section 8. 

(e) Exclusive Benefit; No Other Severance. The provisions of this Section 5 shall supersede in their entirety any severance
payment provisions in any severance plan, policy, program or other arrangement maintained by the Company. 
 (f) No Requirement to
Mitigate; Survival. Executive shall not be required to mitigate the amount of any payment provided for under this Agreement by seeking other employment or in any other manner. Notwithstanding anything to the contrary in this Agreement, the
termination of Executive’s employment and the expiration or termination of the Term shall not impair the rights or obligations of any party hereto. 

(g) Certain Reductions. The Company shall reduce Executive’s severance benefits under this Agreement, in whole or in part, by any
other severance benefits, pay in lieu of notice, or other similar benefits payable to Executive by the Company in connection with Executive’s termination, including but not limited to payments or benefits pursuant to (i) any applicable
legal requirement, including, without limitation, the Worker Adjustment and Retraining Notification Act, or (ii) any Company policy or practice providing for Executive to remain on the payroll without being in active service for a limited
period of time after being given notice of the termination of Executive’s employment. The benefits provided under this Agreement are intended to satisfy, to the greatest extent possible, any and all statutory obligations that may arise out of
Executive’s termination of employment. Such reductions shall be applied on a retroactive basis, with severance benefits previously paid being recharacterized as payments pursuant to the Company’s statutory obligation. 

  
 9 

	6.	Treatment of Equity. 

 (a) New Stock Option. Promptly following the
Effective Date, Executive shall be granted an option (the “Option”) to purchase 39,900 shares of Group common stock for an exercise price per share equal to the per share fair market value of Group’s common stock on the date of
grant, as determined by Group’s board of directors. The Option shall vest and become exercisable with respect to one-fourth (1/4) of the shares initially subject to the Option on each of the first four anniversaries of the Effective Date,
subject to Executive’s continued service to the Company through the applicable vesting date. The Option shall otherwise be subject to the terms of the equity incentive plan pursuant to which it is granted and Group’s standard option
agreement to be entered into between Executive and Group. 
 (b) Stockholders Agreement. As a condition to the exercise of the Option
or the acquisition of any other equity interest in Group, Executive agrees to enter into any stockholders agreement and/or side agreement restricting the sale of shares of Group common stock requested by Group at any time. 

 

	7.	Indemnification and Cooperation. 

 (a) Indemnification. The Company shall
indemnify Executive in Executive’s capacity as director, officer, employee or agent of the Company to the fullest extent permissible by applicable law and the Company’s charter and by-laws, and shall purchase and maintain, for the benefit
of Executive, director and officer liability insurance (including post-termination/post-director service tail coverage) in a form at least as comprehensive as, and in an amount that is at least equal to, that maintained by the Company for similarly
situated executive officers of the Company. The Company shall use its reasonable best efforts to cause any successor to all or substantially all of the business or assets of the Company to assume expressly in writing and to agree to perform all of
the obligations of the Company under this Section 7(a). 
 (b) Cooperation. Executive shall reasonably cooperate with the
Company and its Affiliates in connection with any litigation or regulatory matter or with any government authority on any matter, in each case, pertaining to the Company or any Affiliate of the Company and with respect to which Executive may have
relevant knowledge, provided that, in connection with such cooperation, the Company shall reimburse Executive’s reasonable expenses. 
  

	8.	Restrictive Covenants. 

 (a) Affiliates. As used in this Section 8,
the term “Company” shall include the Company and any Affiliate of the Company. 
 (b) Acknowledgements and
Agreements. Executive represents that Executive’s continued employment by the Company and the performance of Executive’s duties hereunder do not and will not breach any agreement with any former employer, including any non-compete
agreement, non-solicit agreement or any agreement to keep in confidence or refrain from using information acquired by Executive prior to Executive’s employment by the Company. During Executive’s employment by the Company, Executive agrees
that Executive will not violate any non-solicitation agreements Executive entered into with any former employer or improperly make use of, or disclose, any information or trade secrets of any former employer or other third party, nor will Executive
bring onto the premises of the Company or use any unpublished documents or any property belonging to any former employer or other third party, in violation of any lawful agreements with that former employer or third party. 

  
 10 

 (c) Non-Competition/Non-Solicitation. Executive acknowledges and recognizes the highly
competitive nature of the businesses of the Company, and further acknowledges and recognizes that the Company has entered into this Agreement in reliance on, among other things, Executive’s agreement to be bound by the non-competition
provisions set forth in this Section 8(c). Accordingly, Executive agrees as follows: 
 (i) Executive shall not, at any
time during the Term and the twelve (12) month period following the Date of Termination (or twenty-four (24) month period following the Date of Termination in the event of termination of Executive’s employment by the Company without
Cause pursuant to Section 4(a)(iv) hereof or Executive’s Constructive Termination pursuant to Section 4(a)(v) hereof), directly or indirectly, (A) engage, participate or assist in any Competing Business, (B) enter the employ
of, or render any services to, any Person engaged in any Competing Business, (C) acquire a financial interest in, or otherwise become actively involved with, any Person engaged in any Competing Business, whether as an individual, partner,
shareholder, officer, director, principal, agent, trustee or consultant. Nothing herein shall prohibit Executive from being a passive owner of not more than two percent (2%) of the outstanding equity interest in any entity that is publicly
traded, so long as Executive has no active participation in the business of such entity. 
 (ii) Executive hereby agrees
that Executive shall not, at any time during the Term and the twelve (12) month period following the Date of Termination (or twenty-four (24) month period following the Date of Termination in the event of Executive’s termination of
employment by the Company without Cause pursuant to Section 4(a)(iv) hereof or Executive’s Constructive Termination pursuant to Section 4(a)(v) hereof), directly or indirectly, either for himself or on behalf of any other Person,
(A) recruit or otherwise solicit or induce any employee, customer or supplier of the Company to terminate its employment or arrangement with the Company, or otherwise change its relationship with the Company, or (B) hire, or cause to be
hired, any Person who was employed by the Company at any time during the twelve (12)-month period immediately prior to the Date of Termination or who thereafter becomes employed by the Company. 

(iii) In the event the terms of this Section 8(c) shall be determined by any court of competent jurisdiction to be
unenforceable by reason of its extending for too great a period of time or over too great a geographical area or by reason of its being too extensive in any other respect, it will be interpreted to, and may be modified by a court of competent
jurisdiction to, extend only over the maximum period of time for which it may be enforceable, over the maximum geographical area as to which it may be enforceable, or to the maximum extent in all other respects as to which it may be enforceable, all
as determined by such court in such action. 
 (iv) Executive understands that the restrictions set forth in this
Section 8(c) are intended to protect the Company’s established employee, customer and supplier relations, and the general goodwill of its business, and Executive agrees that such restrictions are reasonable and appropriate for this
purpose. 

  
 11 

 (v) Tolling. In the event Executive engages in conduct in violation of his
covenants in Sections 8(c), the applicable restricted period shall be extended for a period of time equal to the time in which Executive engaged in competitive activity prohibited by this Agreement. 

(d) Non-Disparagement. Each of the Parties agrees not to disparage the other party, any of the other’s products or practices, or
any of the other’s agents, representatives, or Affiliates, either orally or in writing, at any time; provided, that either party may confer in confidence with their legal representatives and make truthful statements as required by law.

 (e) Confidentiality. As used in this Agreement, “Confidential Information” means information belonging to the
Company or any Affiliate which is of value to the Company or such Affiliate in the course of conducting its business and the disclosure of which could result in a competitive or other disadvantage to the Company or such Affiliate. Confidential
Information includes, without limitation, patient or other medical information, financial information, reports, forecasts, inventions, improvements and other intellectual property, trade secrets, know-how, designs, processes or formulae, software,
market or sales information or plans, customer lists, business plans and prospects and opportunities (such as possible acquisitions or dispositions of businesses or facilities) which have been discussed or considered by the management of the
Company. Confidential Information also includes information developed by Executive in the course of Executive’s employment by the Company, as well as other information to which Executive may have access in connection with Executive’s
employment. Confidential Information also includes the confidential information of others with which the Company or any Affiliate has a business relationship and which is known by Executive or which Executive should have reason to know about.
Notwithstanding the foregoing, Confidential Information does not include information in the public domain, unless due to breach of Executive’s duties under this Section 8(e). 

(i) Executive understands and agrees that Executive’s employment creates a relationship of confidence and trust between
Executive and the Company with respect to all Confidential Information. At all times, both during Executive’s employment with the Company and after its termination, Executive will keep in confidence and trust all such Confidential Information,
and will not use or disclose any such Confidential Information without the written consent of the Company, except as may be necessary in the ordinary course of performing Executive’s duties to the Company or as otherwise required by law. 

(ii) All documents, records, data, apparatus, equipment and other physical property, whether or not pertaining to Confidential
Information, which are furnished to Executive by the Company or any Affiliate or are produced by Executive in connection with Executive’s employment will be and remain the sole property of the Company. Executive will return to the Company all
such materials and property as and when requested by the Company. In any event, Executive will return all such materials and property immediately upon termination of Executive’s employment for any reason, and will not retain any copies thereof
following such termination. 

  
 12 

	9.	Injunctive Relief. 

 It is recognized and acknowledged by Executive that a breach
of the covenants contained in Section 8 will cause irreparable damage to Company and its goodwill, the exact amount of which will be difficult or impossible to ascertain, and that the remedies at law for any such breach will be inadequate.
Accordingly, Executive agrees that in the event of a breach of any of the covenants contained in Section 8, in addition to any other remedy which may be available at law or in equity, the Company will be entitled to specific performance and
injunctive relief without the requirement to post any bond. 
  

	10.	Assignment and Successors. 

 The Company may assign its rights and obligations
under this Agreement to any Affiliate or to any successor to all or substantially all of the business or the assets of the Company (by merger or otherwise), and may assign or encumber this Agreement and its rights hereunder as security for
indebtedness of the Company and its Affiliates. This Agreement shall be binding upon and inure to the benefit of the Company, Executive and their respective successors, assigns, personnel and legal representatives, executors, administrators, heirs,
distributees, devisees, and legatees, as applicable. None of Executive’s rights or obligations may be assigned or transferred by Executive, other than Executive’s rights to payments hereunder, which may be transferred only by will or
operation of law. Notwithstanding the foregoing, Executive shall be entitled, to the extent permitted under applicable law and applicable Company arrangements, to select and change a beneficiary or beneficiaries to receive compensation hereunder
following Executive’s death by giving written notice thereof to the Company. 
  

	11.	Miscellaneous Provisions. 

 (a) Right to Work. This Agreement, and
employment as the Company’s Chief Executive Officer pursuant to this Agreement, is conditioned upon your consent to, and results satisfactory to the Company of, Executive shall be required to (i) a drug test and (ii) a physical exam
at Mayo Clinic in Scottsdale, Arizona. All reasonable and customary expenses incurred by Executive in connection with the foregoing shall be reimbursed by the Company, in accordance with the Company’s reimbursement policies. Executive shall
also be required to provide documentation of Executive’s U.S. citizenship and maintain such citizenship during the Term. 
 (b)
Governing Law. This Agreement shall be governed, construed, interpreted and enforced in accordance with its express terms, and otherwise in accordance with the substantive laws of the State of Colorado, without giving effect to any principles
of conflicts of law, whether of the State of Colorado or any other jurisdiction, and where applicable, the laws of the United States, that would result in the application of the laws of any other jurisdiction. 

(c) Validity. The invalidity or unenforceability of any provision or provisions of this Agreement shall not affect the validity or
enforceability of any other provision of this Agreement, which shall remain in full force and effect. 
 (d) Notices. Any notice,
request, claim, demand, document and other communication hereunder to any Party shall be effective upon receipt (or refusal of receipt) and shall be in writing and delivered personally or sent by facsimile or certified or registered mail, postage
prepaid, as follows: 

  
 13 

	 	(i)	If to the Company: 

 Frontier Airlines, Inc. 

7001 Tower Road 
 Denver, CO
80249-7312 
 Attn: Board of Directors 

and copies to: 

Latham & Watkins LLP 

140 Scott Drive 
 Menlo Park,
California 94025-1008 
 Attn: Anthony J. Richmond, Esq. 

Facsimile: (650) 463-2600 
  

	 	(ii)	If to Executive, at the address set forth on the signature page hereto, or 

  

	 	(iii)	at any other address as any Party shall have specified by notice in writing to the other Party. 

(e) Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original, but all of
which together will constitute one and the same Agreement. Signatures delivered by facsimile shall be deemed effective for all purposes. 

(f) Entire Agreement. The terms of this Agreement are intended by the Parties to be the final expression of their agreement with
respect to the employment of Executive by the Company and supersede all prior understandings and agreements, whether written or oral, except for the option agreements entered into between Executive and the Group. The Parties further intend that this
Agreement shall constitute the complete and exclusive statement of their terms and that no extrinsic evidence whatsoever may be introduced in any judicial, administrative, or other legal proceeding to vary the terms of this Agreement. 

(g) Amendments; Waivers. This Agreement may not be modified, amended, or terminated except by an instrument in writing, signed by
Executive and a duly authorized officer of Company, which specifically states the intention to modify, amend or terminate this Agreement. By an instrument in writing signed by Executive or a duly authorized officer of the Company, Executive or the
Company, as applicable, may waive compliance by the other Party with any specifically identified provision of this Agreement that such other Party was or is obligated to comply with or perform; provided, however, that such
waiver shall not operate as a waiver of, or estoppel with respect to, any other or subsequent failure. No failure to exercise and no delay in exercising any right, remedy, or power hereunder shall preclude any other or further exercise of any other
right, remedy, or power provided herein or by law or in equity. 

  
 14 

 (h) No Inconsistent Actions. The Parties hereto shall not voluntarily undertake any action
or course of action inconsistent with, or fail voluntarily to undertake any action or course of action required by, the provisions or essential intent of this Agreement. Furthermore, it is the intent of the Parties hereto to act in a fair and
reasonable manner with respect to the interpretation and application of the provisions of this Agreement. 
 (i) Construction. This
Agreement shall be deemed drafted equally by both the Parties. Its language shall be construed as a whole and according to its fair meaning. Any presumption or principle that the language is to be construed against any Party shall not apply. The
headings in this Agreement are only for convenience and are not intended to affect construction or interpretation. Any references to paragraphs, subparagraphs, sections or subsections are to those parts of this Agreement, unless the context clearly
indicates to the contrary. Also, unless the context clearly indicates to the contrary, (a) the plural includes the singular and the singular includes the plural; (b) “and” and “or” are each used both conjunctively and
disjunctively; (c) “any,” “all,” “each,” or “every” means “any and all,” and “each and every”; (d) “includes” and “including” are each “without
limitation”; (e) “herein,” “hereof,” “hereunder” and other similar compounds of the word “here” refer to the entire Agreement and not to any particular paragraph, subparagraph, section or subsection;
and (f) all pronouns and any variations thereof shall be deemed to refer to the masculine, feminine, neuter, singular or plural as the identity of the entities or persons referred to may require. 

(j) Arbitration. Any dispute or controversy based on, arising under or relating to this Agreement shall be settled exclusively by final
and binding arbitration, conducted before a single neutral arbitrator in the City and County of Denver, Colorado in accordance with the Employment Arbitration Rules and Mediation Procedures of the American Arbitration Association (the
“AAA”) then in effect. Arbitration may be compelled, and judgment may be entered on the arbitration award in any court having jurisdiction; provided, however, that the Company shall be entitled to seek a restraining order or
injunction in any court of competent jurisdiction to prevent any continuation of any violation of the provisions of Section 8, and Executive hereby consents that such restraining order or injunction may be granted without requiring the Company
to post a bond. Only individuals who are (a) lawyers engaged full-time in the practice of law and (b) on the AAA roster of arbitrators shall be selected as an arbitrator. Within twenty (20) days of the conclusion of the arbitration
hearing, the arbitrator shall prepare written findings of fact and conclusions of law. Each party shall bear its own costs and attorneys’ fees in connection with any arbitration; provided that the Company shall bear the cost of the arbitrator
and the AAA’s administrative fees. 
 (k) Enforcement. If any provision of this Agreement is held to be illegal, invalid or
unenforceable under present or future laws effective during the term of this Agreement, such provision shall be fully severable; this Agreement shall be construed and enforced as if such illegal, invalid or unenforceable provision had never
comprised a portion of this Agreement; and the remaining provisions of this Agreement shall remain in full force and effect and shall not be affected by the illegal, invalid or unenforceable provision or by its severance from this Agreement.
Furthermore, in lieu of such illegal, invalid or unenforceable provision there shall be added automatically as part of this Agreement a provision as similar in terms to such illegal, invalid or unenforceable provision as may be possible and be
legal, valid and enforceable. 

  
 15 

 (l) Withholding. The Company shall be entitled to withhold from any amounts payable under
this Agreement any federal, state, local or foreign withholding or other taxes or charges which the Company is required to withhold. The Company shall be entitled to rely on an opinion of counsel if any questions as to the amount or requirement of
withholding shall arise. 
  

	12.	Section 409A. 

 (a) General. The intent of the Parties is that the
payments and benefits under this Agreement comply with or be exempt from Section 409A and, accordingly, to the maximum extent permitted, this Agreement shall be interpreted to be in compliance therewith. If Executive notifies the Company that
Executive has received advice of tax counsel of a national reputation with expertise in Section 409A that any provision of this Agreement would cause Executive to incur any additional tax or interest under Section 409A (with specificity as
to the reason therefor) or the Company (which shall have no obligation to assess the issue absent such notice from Executive) independently makes such determination, the Company and Executive shall take commercially reasonable efforts to reform such
provision to try to comply with or be exempt from Section 409A through good faith modifications to the minimum extent reasonably appropriate to conform with Section 409A, provided that any such modifications shall not increase the cost or
liability to the Company. To the extent that any provision hereof is modified in order to comply with or be exempt from Section 409A, such modification shall be made in good faith and shall, to the maximum extent reasonably possible, maintain
the original intent and economic benefit to Executive and the Company of the applicable provision without violating the provisions of Section 409A. Notwithstanding anything herein to the contrary, Executive acknowledges and agrees that
(i) Executive is not relying upon any determination by the Company, its Affiliates, or any of their respective employees, directors, officers, attorneys or agents regarding the tax effects, including, without limitation, tax effects under
Section 409A, associated with Executive’s entry into this Agreement or the receipt of any payments hereunder, and (ii) in deciding to enter into this Agreement, Executive is relying on Executive’s own judgment and the judgment of
the professionals of Executive’s choice with whom Executive has consulted. 
 (b) Separation from Service. Notwithstanding any
provision to the contrary in this Agreement: (i) no amount that constitutes “deferred compensation” under Section 409A shall be payable pursuant to Sections 5(b) or 5(c) unless the termination of Executive’s employment
constitutes a “separation from service” within the meaning of Section 1.409A-1(h) of the Department of Treasury Regulations (“Separation from Service”); (ii) for purposes of Section 409A, Executive’s
right, if any, to receive installment payments pursuant to Sections 5(b) or 5(c) hereof shall be treated as a right to receive a series of separate and distinct payments; and (iii) to the extent that any reimbursement of expenses or in-kind
benefits constitutes “deferred compensation” under Section 409A, such reimbursement or benefit shall be provided no later than December 31st of the year following the year in
which the expense was incurred. The amount of expenses reimbursed in one year shall not affect the amount eligible for reimbursement in any subsequent year. The amount of any in-kind benefits provided in one year shall not affect the amount of
in-kind benefits provided in any other year. Any good faith determination by the Company in respect of Section 409A shall be final and binding on Executive. 

  
 16 

 (c) Specified Employee. Notwithstanding anything in this Agreement to the contrary, if
Executive is deemed by the Company at the time of Executive’s Separation from Service to be a “specified employee” for purposes of Section 409A, to the extent delayed commencement of any portion of the benefits to which Executive
is entitled under this Agreement is required in order to avoid a prohibited distribution under Section 409A, such portion of Executive’s benefits shall not be provided to Executive prior to the earlier of (i) the expiration of the six
(6)-month period measured from the date of Executive’s Separation from Service with the Company or (ii) the date of Executive’s death. Upon the first business day following the expiration of the applicable Section 409A period,
all payments deferred pursuant to the preceding sentence shall be paid in a lump sum to Executive (or Executive’s estate or beneficiaries), and any remaining payments due to Executive under this Agreement shall be paid as otherwise provided
herein. 
 (d) Release. Notwithstanding anything to the contrary in this Agreement, to the extent that any payments due under this
Agreement as a result of termination of Executive’s employment are subject to Executive’s execution and delivery of a Release, (i) if Executive fails to execute and deliver the Release on or prior to the Release Deadline (as defined
below) or timely revokes the Release thereafter, Executive shall not be entitled to any payments or benefits otherwise conditioned on the Release, and (ii) in any case where the Date of Termination and the Release Deadline fall in two separate
taxable years, any payments required to be made to Executive that are conditioned on the Release and are treated as nonqualified deferred compensation for purposes of Section 409A shall be made in the later taxable year. For purposes of this
Section 12(d), “Release Deadline” shall mean the date that is twenty-one (21) days following the date upon which the Company timely delivers the Release to Executive, or, in the event that Executive’s termination of
employment is “in connection with an exit incentive or other employment termination program” (as such phrase is defined in the Age Discrimination in Employment Act of 1967), as determined by the Company, the date that is forty-five
(45) days following such delivery date. To the extent that any payments of nonqualified deferred compensation (within the meaning of Section 409A) due under this Agreement as a result of Executive’s termination of employment are
delayed pursuant to this Section 12(d), such amounts shall be paid in a lump sum on the first payroll date following the date that Executive executes and delivers and does not revoke the Release (and the applicable revocation period has
expired) or, in the case of any payments subject to Section 12(d)(iii), on the first payroll period to occur in the subsequent taxable year, if later. 
  

	13.	Excess Parachute Payments, Limitation on Payments. 

 (a) Best Pay Cap.
Notwithstanding any other provision of this Agreement, in the event that any payment or benefit received or to be received by Executive (including any payment or benefit received in connection with a termination of Executive’s employment,
whether pursuant to the terms of this Agreement or any other plan, arrangement or agreement) (all such payments and benefits, including the payments and benefits under Section 5 hereof, being hereinafter referred to as the “Total
Payments”) would be subject (in whole or part), to the excise tax imposed under Section 4999 of the Code (such excise tax, the “Excise Tax”), then, after taking into account any reduction in the Total Payments provided
by reason of Section 280G of the Code in such other plan, arrangement or agreement, the cash severance payments under this Agreement shall first be reduced, and the noncash severance payments hereunder shall thereafter be reduced, to the extent
necessary so that no portion of the Total Payments is subject 

  
 17 

 
to the Excise Tax but only if (i) the net amount of such Total Payments, as so reduced (and after subtracting the net amount of federal, state and local income taxes on such reduced Total
Payments and after taking into account the phase out of itemized deductions and personal exemptions attributable to such reduced Total Payments) is greater than or equal to (ii) the net amount of such Total Payments without such reduction (but
after subtracting the net amount of federal, state and local income taxes on such Total Payments and the amount of Excise Tax to which Executive would be subject in respect of such unreduced Total Payments and after taking into account the phase out
of itemized deductions and personal exemptions attributable to such unreduced Total Payments). 
 (b) Certain Exclusions. For
purposes of determining whether and the extent to which the Total Payments will be subject to the Excise Tax, (i) no portion of the Total Payments the receipt or enjoyment of which Executive shall have waived at such time and in such manner as
not to constitute a “payment” within the meaning of Section 280G(b) of the Code shall be taken into account; (ii) no portion of the Total Payments shall be taken into account which, in the written opinion of an independent,
nationally recognized accounting firm selected by the Company (the “Independent Advisors”), does not constitute a “parachute payment” within the meaning of Section 280G(b)(2) of the Code (including by reason of
Section 280G(b)(4)(A) of the Code) and, in calculating the Excise Tax, no portion of such Total Payments shall be taken into account which, in the opinion of Independent Advisors, constitutes reasonable compensation for services actually
rendered, within the meaning of Section 280G(b)(4)(B) of the Code, in excess of the “base amount” (as defined in Section 280G(b)(3) of the Code) allocable to such reasonable compensation; and (iii) the value of any non cash
benefit or any deferred payment or benefit included in the Total Payments shall be determined by the Independent Advisors in accordance with the principles of Sections 280G(d)(3) and (4) of the Code. Promptly following any request to do so,
Executive shall provide to any Independent Advisors such information as they may require to assess the impact of Section 280G(b) on any amounts payable hereunder. Any good faith determinations of the Independent Advisors made hereunder shall be
final and binding upon the Company and Executive. 
  

	14.	Employee Acknowledgment. 

 Executive acknowledges that Executive has read and
understands this Agreement, is fully aware of its legal effect, has not acted in reliance upon any representations or promises made by the Company other than those contained in writing herein, and has entered into this Agreement freely based on
Executive’s own judgment. 
 (Signature Page Follows) 

  
 18 

 IN WITNESS WHEREOF, the Parties have duly executed this Agreement as of the date and year first
above written. 
  

			
	FRONTIER AIRLINES, INC.
		
	By:	 	/s/ Howard M. Diamond
	Name: Howard M. Diamond
	Title: General Counsel and Secretary

  

	
	EXECUTIVE:
	
	/s/ Barry L. Biffle
	Barry L. Biffle

  

			
	Address:	 	
	
	7001 Tower Rd.
	
	Denver, Colorado
	
	80249

  
 [Signature Page to
Barry L. Biffle Employment Agreement] 

 Exhibit A 

Form of General Release of Claims 

In exchange for, and as a condition to the receipt of, the severance benefits (“Severance Benefits”) set forth in
Section 5(b) or Section 5(c), as applicable, of that certain Employment Agreement by and between Frontier Airlines, Inc. (the “Company”) and myself, entered into effective as of
[            ], 2016 (the “Employment Agreement”), I freely and voluntarily agree to enter into and be bound by this Waiver and Release of Claims Agreement (the
“Release”): 
 1. I acknowledge that my services with the Company and all subsidiaries and affiliates thereof terminated on
[            ]. 
 2. I acknowledge that, but for my timely execution of
this Release and my timely delivery of the executed Release to the Company (within the period described in paragraph 5 below), I would not be entitled to receive the Severance Benefits. 

3. I, and anyone claiming through me (including, without limitation, my heirs, and agents, representatives and assigns), hereby irrevocably
waive and forever release and discharge the Company, its owners, subsidiaries, affiliates, and each of their respective officers, directors, employees, agents, predecessors, successors and assigns (the “Releasees”), from any and all
liabilities of any nature whatsoever, known and unknown, fixed or contingent, arising out of, based on, or related to my services to the Company or any other Releasee, the termination of such services, any rights with respect to equity ownership of
the Company, and any dealings, transactions or events involving the Releasees occurring prior to or on the date this Release becomes effective, including but not limited to claims under the Civil Rights Act of 1866; the Civil Rights Act of 1871; the
Civil Rights Act of 1964, as amended; the Age Discrimination in Employment Act of 1967 (as amended, the “ADEA”); the Older Workers Benefit Protection Act of 1990; the Americans with Disabilities Act of 1990; the Employment Retirement
Income Security Act of 1974; the Rehabilitation Act of 1973; the Family and Medical Leave Act; the federal Worker Adjustment and Retraining Notification Act (and any similar state laws); the Equal Pay Act of 1963; the Fair Labor Standards Act; the
Consolidated Omnibus Budget Reconciliation Act of 1985; Executive Order 11141; the Sarbanes-Oxley Act of 2002; the Colorado Anti-Discrimination Act; and any other federal, state or local law, rule or regulation, and common law claims. This includes,
but is not limited to, all wrongful termination and “constructive discharge” claims, all discrimination claims, all claims relating to any contracts of employment or other service, whether express or implied, any covenant of good faith and
fair dealing, whether express or implied, and any tort of any nature. This release is for any relief, no matter how denominated, including but not limited to wages, back pay, front pay, benefits, compensatory damages, liquidated damages, punitive
damages or attorney’s fees. I also agree not to commence or cooperate in the prosecution or investigation of any lawsuit, administrative action or other claim or complaint against the Releasees, except as required by law; in the event that any
such proceeding is commenced on my behalf, I waive the right to receive any monetary recovery in such proceeding. This Release does not extend to claims due to the failure of the Company to pay the Severance Benefits in accordance with the terms of
the Employment Agreement or claims that may arise after the date this Release becomes effective. 

 4. I understand and agree that this Release will be binding on me and my heirs, administrators
and assigns. I acknowledge that I have not assigned any claims or filed or initiated any legal proceedings against any of the Releasees. 

5. I understand that I have twenty-one (21) days (or, in the event that my termination of my services is “in connection with an exit
incentive or other employment termination program” (as such phrase is defined in the ADEA), as determined by the Company, forty-five (45) days) to sign this Release and deliver it to the Company and that I have a right to decide not to
sign and deliver this Release. The Company hereby advises me of my right to consult with an attorney before signing the Release and I acknowledge that I have had an opportunity to consult with an attorney and have either held such consultation or
have determined not to consult with an attorney. 
 6. I understand that I may revoke this Release by delivering written notice of my
revocation to Frontier Airlines, Inc., 7001 Tower Road, Denver, Colorado 80249, Attn: Board of Directors within the seven (7) day period beginning on the day following the day I sign the Release (the “Revocation Period”). If I do not
revoke this Release within the Revocation Period, it will be legally binding and enforceable on the day immediately following the last day of the revocation period. 

7. I acknowledge and agree that if any provision of this Release is found, held or deemed by a court of competent jurisdiction to be void,
unlawful or unenforceable under any applicable statute or controlling law, the remainder of this Release shall continue in full force and effect. 

8. This Release is deemed made and entered into in the State of Colorado, and in all respects shall be interpreted, enforced and governed
under the internal laws of the State of Colorado without regard to the conflicts of law principles of any jurisdiction. 
 * * * * * 

I acknowledge and agree that I have carefully read and fully understand all of the provisions of this Release and that I voluntarily enter
into this Release by signing below. Upon execution, I agree to deliver a signed copy of this Release to Frontier Airlines, Inc., 7001 Tower Road, Denver, Colorado 80249, Attn: Board of Directors. 

 

			
	
	 
	Barry L. Biffle
		
	Date:

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