Document:

Exhibit 4.4

                               FIRST AMENDMENT TO
                                CREDIT AGREEMENT

       THIS FIRST AMENDMENT TO CREDIT AGREEMENT (the "First Amendment"), dated
as of May 30, 1996, amends the Credit Agreement (the "Credit Agreement") dated
as of September 27, 1995 by and among Midwest Express Holdings, Inc. (the
"Company"), Firstar Bank Milwaukee, N.A., ("Firstar"), M&I Marshall & Ilsley
Bank ("M&I"), and Bank One, Milwaukee, NA ("Bank One") (Firstar, M&I and Bank
One are sometimes referred to collectively herein as the "Banks").

       1. Definitions. Capitalized terms not otherwise defined herein shall have
the meanings assigned to them in the Credit Agreement.

       2. Amendments. The parties hereby agree to amend the Credit Agreement as
follows:

              (a) Section 5.1(d) is deleted in its entirety and the following
       inserted in its place:

              (b) Section 5.1(e) is redesignated as Section 5.1(f) and a new
       Section 5.1(e) is inserted as follows:

                     "(e) (i) indebtedness secured by purchase money liens on
              aircraft; (ii) indebtedness arising from the refinancing of
              aircraft leases (including without limitation indebtedness arising
              under that certain Lease Intended as Security dated as of May 30,
              1996 among Astral Aviation, Inc., Midwest Express Holdings, Inc.,
              Midwest Express Airlines, Inc. and Bank One (the "Lease
              Agreement")), provided that: (x) with respect to lease
              refinancings as to which Astral Aviation, Inc. is lessee, the
              principal amount of indebtedness being refinanced with respect to
              any aircraft lease does not exceed the subject aircraft's
              corresponding appraised value, all as set forth on the Schedule of
              Lease Refinancing attached to the First Amendment and (y) with
              respect to lease refinancings as to which Midwest Express Airline,
              Inc. is lessee, such refinancings do not increase the principal
              amount outstanding under such leases, and (iii) brokers' fees
              incurred in connection with the refinancings described in section
              5.1(e)(ii); and "

              (c) The period at the end of Section 5.7 is deleted, the word
       "and" is deleted immediately before "(iii)" and the following is inserted
       at the end of Section 5.7:

<PAGE>

                     "and (iv) pursuant to guaranties by Astral Aviation, Inc.,
              Midwest Express Holdings, Inc. and/or Midwest Express Airlines,
              Inc. executed in connection with the transactions permitted
              pursuant to sections 5.1(e)(i) and 5.1(e)(ii) hereof, provided
              that the terms of such guaranties are substantially consistent in
              substance with the terms of that certain Guarantee of Midwest
              Express Holdings, Inc. and Midwest Express Airlines, Inc. dated as
              of May 30, 1996 in favor of Bank One pursuant to the Lease
              Agreement; and (v) pursuant to those certain guaranties of Midwest
              Express Airlines, Inc. and Astral Aviation, Inc. dated as of
              September 27, 1995 in favor of Kimberly-Clark Corporation."

              (d) The period at the end of Section 9.1(o)(iii) is deleted and
       the following is inserted immediately thereafter:

                     "or sections 5.1(e)(i) and 5.1(e)(ii)."

       3. Conditions Precedent. This First Amendment shall become effective upon
the execution thereof by the Company and the Banks and delivery thereof to the
Banks.

       4. Representations and Warranties. The Company certifies that the
representations and warranties contained in the Credit Agreement are true and
correct as of the date of this First Amendment, and that no condition, event,
act or omission has occurred which, with the giving of notice or passage of
time, or both, would constitute an Event of Default under the Credit Agreement.

       5. Full Force and Effect. Except as provided herein, all of the terms and
conditions set forth in the Credit Agreement, and all additional documents
entered into in connection with the Credit Agreement, shall remain unchanged and
shall continue in full force and effect as originally set forth.

       6. Binding Effect. This First Amendment shall be binding upon the parties
hereto and their respective successors and assigns.

                     [REMAINDER OF PAGE DELIBERATELY BLANK]

                                       2
<PAGE>

       IN WITNESS WHEREOF, the parties hereto have executed this First Amendment
to Credit Agreement as of the date first set forth above.

                                           MIDWEST EXPRESS HOLDINGS, INC.

                                           By:
                                              ----------------------------------
                                           Title:
                                                 -------------------------------

                                           FIRSTAR BANK MILWAUKEE, N.A.

                                           By:
                                              ----------------------------------
                                           Title:
                                                 -------------------------------

                                           M&I MARSHALL & ILSLEY BANK

                                           By:
                                              ----------------------------------
                                           Title:
                                                 -------------------------------

                                           BANK ONE, MILWAUKEE, NA

                                           By:
                                              ----------------------------------
                                           Title:
                                                 -------------------------------

                                       3Exhibit 10.23

                                AMENDMENT NO. 16

                                       TO

                            AIRLINE LEASE NO. AC-865

         THIS AMENDMENT TO CONTRACT OF LEASE is made and entered into as of the
12th day of January, 2001, by and between MILWAUKEE COUNTY, a municipal
corporation, organized and existing as one of the counties in Wisconsin
(hereinafter referred to as "Lessor" or "County"), and MIDWEST EXPRESS AIRLINES,
INC., a corporation organized and existing under the laws of the State of
Wisconsin (hereinafter referred to as "Lessee" or "Airline").

                              W I T N E S S E T H:

         THAT, WHEREAS, the parties hereto have heretofore entered into an
Airline Lease dated April 5, 1985, as amended, relating to space, occupancy and
the use of the premises and facilities of General Mitchell International Airport
(GMIA) for the transportation of persons and cargo by air; and

         WHEREAS, Airline requests that Lessor assign portions of unassigned
terminal building areas to Airline for Airline to construct additional Ticket
Counter, Ticket Counter Office, Baggage Makeup, and Concourse Upper Level Office
Finished space; and,

         WHEREAS, Airline requests that Lessor accept surrender of the
commitment of approximately 886.1 square feet of Ticket Counter Office area
which became unusable due to ticket building entrance renovation; and,

         WHEREAS, on September 30, 1999, (File No. 99-517), December 16, 1999
(Files No. 99-651 and 99-653), and March 16, 2000 (File No. 00-162) County's
Board of Supervisors approved amending Airline's Lease to add additional Ticket
Counter, Ticket Counter Office, Baggage Makeup, and Concourse Upper Level Office
Finished space, and delete unusable Ticket Counter Office area;

         NOW, THEREFORE, for and in consideration of the premises and of the
mutual covenants and agreements herein contained and other valuable
considerations, it is mutually agreed between the parties hereto that the
aforesaid agreement dated April 5, 1985, as amended, be and is hereby further
amended in the following particulars, to wit:

1.       Effective on January 1, 2000, paragraph S of Article IV shall be
         deleted in its entirety and a new paragraph S inserted therefore,
         reading as follows:

         "S   LESSEE'S EXCLUSIVE USE SPACE WITHIN THE TERMINAL BUILDING ON
              JANUARY 1, 2000

<PAGE>

         For purposes of calculation of Lessee's Terminal rents for those areas
         designated for Lessee's exclusive use in the Terminal Building, the
         following space definitions, relative cost factors, and resultant ERUs
         shall be utilized:

                                                       Relative
     Space Function                     Sq. Ft.       Cost Factor       ERUs
     --------------                     -------       -----------       ----
     Concourse Lower Level Office         -0-             .20            -0-
     Unfinished (Unheated)
     Concourse Lower Level Office       4,588.50          .70         3,211.95
     Unfinished (Heated)
     Concourse Lower Level Office      30,460.90          .85         25,891.77
     Finished (Heated & Air
     Conditioned)
     Concourse Upper Level Office         -0-             .95            -0-
     Unfinished
     Concourse Upper Level Office        833.00           .95          791.35
     Finished
     Ticket Counter                     1,257.20         1.10         1,382.92
     Ticket Counter Office              1,901.60          .95         1,806.52
     Gate Hold Rooms                   19,692.00         1.00         19,692.00
     Baggage Makeup Area                5,619.10          .75         4,214.33
     Baggage Service Office              405.00          1.00          405.00
     Hold Room Stairwell                1,796.44          .15          269.47
     Basement                             -0-             .25            -0-
     Mezzanine Office Areas               -0-             .90            -0-
     Operations Control Tower            401.00          1.08          433.08
                                       ---------                      ---------
     TOTALS                            66,954.74                      58,098.39

         The spaces outlined above are those occupied by Lessee on January 1,
         2000, which adds 222 square feet of Ticket Counter

                                      -2-
<PAGE>

         space; a net of 109 square feet of Baggage Makeup Area; and deletes a
         net of 218.1 square feet of Ticket Counter Office space, as shown on
         Exhibit "P", page 1 of 15, Rev. 1/00 and Exhibit "P", page 15 of 15,
         Rev. 1/00, attached hereto and made a part hereof."

2.       Effective on April 1, 2000, paragraph S of Article IV shall be deleted
         in its entirety and a new paragraph S inserted therefore, reading as
         follows:

         "S       LESSEE'S EXCLUSIVE USE SPACE WITHIN THE TERMINAL BUILDING ON
                  APRIL 1, 2000

                  For purposes of calculation of Lessee's Terminal rents for
                  those areas designated for Lessee's exclusive use in the
                  Terminal Building, the following space definitions, relative
                  cost factors, and resultant ERUs shall be utilized:

                                                       Relative
     Space Function                     Sq. Ft.       Cost Factor       ERUs
     --------------                     -------       -----------       ----
     Concourse Lower Level Office         -0-             .20            -0-
     Unfinished (Unheated)
     Concourse Lower Level Office       4,588.50          .70         3,211.95
     Unfinished (Heated)
     Concourse Lower Level Office      30,460.90          .85         25,891.77
     Finished (Heated & Air
     Conditioned)
     Concourse Upper Level Office         -0-             .95            -0-
     Unfinished
     Concourse Upper Level Office       5,793.00          .95         5,503.35
     Finished
     Ticket Counter                     1,257.20         1.10         1,382.92
     Ticket Counter Office              1,901.60          .95         1,806.52
     Gate Hold Rooms                   19,692.00         1.00         19,692.00
     Baggage Makeup Area                5,619.10          .75         4,214.33
     Baggage Service Office              405.00          1.00          405.00

                                      -3-
<PAGE>

                                                       Relative
     Space Function                     Sq. Ft.       Cost Factor       ERUs
     --------------                     -------       -----------       ----

     Hold Room Stairwell                1,796.44          .15          269.47
     Basement                             -0-             .25            -0-
     Mezzanine Office Areas               -0-             .90            -0-
     Operations Control Tower            401.00          1.08          433.08
                                       ---------                      ---------
     TOTALS                            71,914.74                      62,810.39

         The spaces outlined above are those occupied by Lessee on April 1,
         2000, which adds 4,960 square feet of Concourse Upper level Office
         Finished space, as shown on Exhibit "P", page 11 of 15, Rev. 4/00,
         attached hereto and made a part hereof."

3.       Except as specifically provided herein, the terms and conditions of the
         Lease heretofore entered into between the parties dated April 5, 1985,
         as amended, shall remain in full force and effect.

                                      -4-
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused these presents to be
signed by their respective proper officers and their corporate seals hereto
affixed on the dates hereinafter set forth.

                                     COUNTY

         Dated at Milwaukee, Wisconsin, this 12th day of January, 2001.

APPROVED:                                      MILWAUKEE COUNTY
                                               a municipal corporation

                                               By:
---------------------------------------           -----------------------------
Airport Director            Date                  Name:

                                               By:
---------------------------------------           -----------------------------
Corporation Counsel         Date                  Name:

                                     AIRLINE

         Dated at Milwaukee, Wisconsin, this ____ day of _____________, 200_.

                                               MIDWEST EXPRESS AIRLINES, INC.
                                               a Wisconsin corporation

                                               By:
                                                  ------------------------------
                                                  Name:
                                                  Title:

                                               Date:
                                                    ----------------------------

                                               By:
                                                  ------------------------------
                                                  Name:
                                                  Title:

                                               Date:
                                                    ----------------------------

                                      -5-
<PAGE>

STATE OF WISCONSIN          )
                            )  SS
MILWAUKEE COUNTY            )

Personally came before me this ____ day of _____________________, 200_, the
above named David A. Novak, Director of Public Works for Milwaukee County, to me
known to be the person who executed the foregoing instrument on behalf of
Milwaukee County, and acknowledged the same to be the free act and deed of said
County, made by its authority.

                                           -------------------------------------
                                           Notary Public, Milwaukee Co., Wis.
                                           My commission expires _____________

STATE OF WISCONSIN          )
                            )  SS
MILWAUKEE COUNTY            )

Personally came before me this ____ day of _____________________, 200_, the
above named Mark Ryan, County Clerk, of Milwaukee County, to me known to be the
person who executed the foregoing instrument on behalf of Milwaukee County, and
acknowledged the same to be the free act and deed of said County, made by its
authority.

                                             ---------------------------------
                                             Notary Public, Milwaukee Co., Wis.
                                             My commission expires _____________

                                      -6-
<PAGE>

STATE OF WISCONSIN         )
                           )  SS
MILWAUKEE COUNTY           )

Personally came before me this ____ day of _____________________, 200_,

 ---------------------------------------, ------------------------------------,
                  (Name)                                               (Title)

and ______________________________________, __________________________________,
                  (Name)                                               (Title)

of MIDWEST EXPRESS AIRLINES, INC., Lessee above, to me known to be the persons
who executed the foregoing instrument and to me known to be such officers of
said corporation, and acknowledged that they executed the foregoing instrument
as such officers as the deed of said corporation, by its authority.

                                             ---------------------------------
                                             Notary Public, Milwaukee Co., Wis.
                                             My commission expires _____________

                                      -7-

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