EX-10.1(d)



 Exhibit 10.1(d) 

[DENVER INTERNATIONAL AIRPORT] 
 May 5, 2015

 Frontier Airlines, Inc. 
 Attn: James Dempsey 

7001 Tower Road 
 Denver, CO 80249 

Dear Mr. Dempsey, 
 This Letter of
Agreement summarizes the essential business terms by which the City and County of Denver, on behalf of its Department of Aviation, will permit Frontier Airlines, Inc. (“Frontier”) to reconfigure its leasehold at Denver International
Airport (“DEN”). 
 On June 9, 2014, Frontier and the City entered into an Airport Use and Lease Agreement (the
“Agreement”), which will expire on December 31, 2016. In February 2015, Frontier and DEN staff began discussions concerning the possible reconfiguration of the Demised Premises described in the Agreement in order to better align
Frontier’s leasehold with its current service schedule. Based on these discussions, the parties have agreed to the following business terms: 
  

	 	1.	Frontier will release between 20,500 and 21,500 square feet of specifically identified signatory and non-signatory space. 

  

	 	2.	Frontier will release preferential gates A25, A27, A29, A31, A24, A26, A28, and A30. 

  

	 	3.	Frontier will retain or expand to gates A32, A34, A36, A38, A40, A42, A44 and A46 as preferential gates. 

  

	 	4.	The City will work with Spirit Airlines to relocate Spirit from gate A44 to another location. In addition, the City will vacate its Radio Shop for Frontier to occupy. 


 

	 	5.	Frontier will reimburse the City for the costs incurred in order to complete the actions listed in Paragraph 4. These costs shall not exceed $***** and will be applied towards the procurement and installation of
comparable common use technology which currently exists at A44 and A46. Frontier agrees to reimburse the City for this work within thirty (30) days upon receipt of invoice based on actual costs. 


 

	*****	Confidential portions of the material have been omitted and filed separately with the Securities and Exchange Commission. 









	 	6.	Frontier will have full access to two City common use gates, separate from the gates listed in paragraph 7. Frontier will continue to operate their international arrivals using gates A33, A35 or A37. 


 

	 	7.	In light of the anticipated conversion of gates A42 and A44 to international gates in First Quarter 2016, Frontier agrees that they will operate international arrivals out of these gates as a priority. The City agrees
to provide City common use gates as overflow for Frontier’s international flights at A33, A35 or A37. For clarification the priority on gates A42 and A44 will be as follows; 


 

	 	1.	Frontier Airlines International Arrivals 

  

	 	2.	Frontier Airlines Domestic Arrivals 

  

	 	3.	Other Airline International Arrivals 

  

	 	8.	The transition to the new gates listed in paragraph 3 will take place during the months of May and June 2015 and be completed by July 1, 2015 for gate changes and July 31, 2015 for facility changes.


  

	 	9.	Frontier agrees to coordinate regularly with the City on the sequencing and timing of the transition in order to meet the deadlines set out in paragraph 8 above. 


 

	 	10.	File Agreement will be amended to reflect these accommodations. The parties intend for the Agreement amendment to be effective on July 1, 2015 and to continue in effect through the remaining term of the Agreement
(December 31, 2016), The parties agree to work cooperatively to accomplish the required amendments. 

  

	 	11.	This Letter of Agreement will be in full force and effect on July 1, 2015. Any changes to this Letter of Agreement will require the consent of both Frontier and DEN. All terms and conditions are subject to the
review and confirmation of Denver City Council through amendment to the Use and Lease Agreement. Notwithstanding the above, the City shall exercise reasonable business efforts to implement the paragraph 4 gate relocations prior to July 1, 2015.


  

	 	12.	Both parties will use best efforts to sign an amendment to the Agreement in advance of July 1, 2015 however the parties acknowledge that the reduction in rent payable will be adjusted in line with the gate and
other space changes from July 1, 2015. 

  

	 	13.	All airport related revenue sharing/concession credit will be payable pro-rata on the basis of space used in the airport during the period of January 1, 2015 to June 30, 2015 and thereafter from July 1,
2015 for the remainder of the lease term. 

  

	 	14.	All space changes are set out in Schedule A (attached) of this Letter of Agreement. 








 The City will have to commit considerable staff resources, undertake extensive planning, expend
costs, and coordinate with other airlines to accommodate and support the reconfiguration of Frontier’s leasehold. To initiate this effort, the City requires certainty that Frontier agrees with the essential business terms enumerated above. For
this reason, the City has reduced the deal points to writing and is requesting Frontier’s approval of this Letter of Agreement on or before May 5, 2015. 

Frontier, by signing and returning this letter agreement to DEN, affirms that they have read the terms listed above and agree to the terms and
conditions contained herein. 
 The City is committed to retaining Frontier as our hometown airline and hopes that the reconfiguration of
Frontier’s leasehold will support your continued presence at DEN for many years to come, 
 Sincerely, 

 

					
	 /s/ Kim Day
	 		  	 /s/ James Dempsey

	Kim Day	 		  	James Dempsey,
	Chief Executive Officer	 		  	Chief Financial Officer
	Denver International Airport	 		  	Frontier Airlines

 Attached: Schedule A 







 SCHEDULE A 
  

																							
	 Current Space
	  	Tenant
Finish	 	  	Sq. Ft.	 	  	Return
Y/N or
New	 	  	 After Changes
	  	Tenant
Finish	 	  	Sq. Ft.	 
	 Ticket Counter
	  				  	Ticket Counter	  				  			
	 R16-2-6-E6-N27-1
	  	 	Yes	 	  	 	1070.30	 	  	 	No	 	  	R16-2-6-E6-N27-1	  	 	Yes	 	  	 	1070.30	 
	 Ticket Office
	  				  	Ticket Office	  				  			
	 R16-1-6-E3-N24-3
	  	 	Yes	 	  	 	1233.60	 	  	 	No	 	  	R16-1-6-E3-N24-3	  	 	Yes	 	  	 	1233.60	 
	 Baggage Service Office
	  				  	Baggage Service Office	  				  			
	 R16-1-4-E4-N23-1
	  	 	Yes	 	  	 	300.00	 	  	 	No	 	  	R16-1-4-E4-N23-1	  	 	Yes	 	  	 	300.00	 
	 R16-1-5-E3-N24-1
	  	 	Yes	 	  	 	460.6	 	  	 	No	 	  	R16-1-5-E3-N24-1	  	 	Yes	 	  	 	460.60	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Terminal Total
	  				  	 	3064.50	 	  				  	Terminal Total	  				  	 	3064.50	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Hold Rooms
	  				  	Hold Rooms	  				  			
		  				  	 	New	 	  	R17-2-3-E16-S4-1 - A46	  	 	Yes	 	  	 	1988.10	 
		  				  	 	New	 	  	R17-2-3-E11-S4-1 - A44	  	 	Yes	 	  	 	2141.00	 
	 R17-2-3-E8-S4-1 - A42
	  	 	Yes	 	  	 	2143.50	 	  	 	No	 	  	R17-2-3-E8-S4-1 - A42	  	 	Yes	 	  	 	2143.50	 
	 R17-2-3-E5-S4-1-A40
	  	 	Yes	 	  	 	1997.50	 	  	 	No	 	  	R17-2-3-E5-S4-1 - A40	  	 	Yes	 	  	 	1997.50	 
	 R17-2-3-W11-S4-1 -A38
	  	 	Yes	 	  	 	1907.70	 	  	 	No	 	  	R17-2-3-W11-S4-1 - A38	  	 	Yes	 	  	 	1907.70	 
	 R17-2-3-W18-S4-1 - A34/A36
	  	 	Yes	 	  	 	3907.80	 	  	 	No	 	  	R17-2-3-W18-S4-1 - A34/A36	  	 	Yes	 	  	 	3907.80	 
	 R17-2-3-W23-S4-1 - A32
	  	 	Yes	 	  	 	1925.30	 	  	 	No	 	  	R17-2-3-W23-S4-1 - A32	  	 	Yes	 	  	 	1925.30	 
	 R17-2-3-W26-S4-1 - A30
	  	 	Yes	 	  	 	1874.00	 	  	 	Yes	 	  		  				  			
	 R17-2-3-W28-S4-1 - A28
	  	 	Yes	 	  	 	2059.70	 	  	 	Yes	 	  		  				  			
	 R17-2-3-W28-N1-1 - A27/A31
	  	 	Yes	 	  	 	5989.00	 	  	 	Yes	 	  		  				  			
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Hold Room Total
	  				  	 	21804.50	 	  				  	Hold Room Total	  				  	 	16010.90	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Ramp Aircraft Parking(Ln. Ft.)
	  				  	 	2086.50	 	  				  	Ramp Aircraft Parking (Ln. Ft.)	  				  	 	1138.40	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Office Space
	  				  	Office Space	  				  			
	 R17-2-3-W10-S4-1
	  	 	Yes	 	  	 	2386.50	 	  	 	Yes	 	  		  				  			
	 R17-2-3-W13-S4-3
	  	 	Yes	 	  	 	373.80	 	  	 	No	 	  	R17-2-3-W13-S4-3	  	 	Yes	 	  	 	373.80	 
	 R17-2-3-W13-S4-1
	  	 	Yes	 	  	 	1058.50	 	  	 	No	 	  	R17-2-3-W13-S4-1	  	 	Yes	 	  	 	1058.50	 
	 R17-2-4-W20-S5-1
	  	 	Yes	 	  	 	2369.70	 	  	 	Yes	 	  		  				  			
	 R17-2-4-W20-N1-1
	  	 	Yes	 	  	 	1082.30	 	  	 	Yes	 	  		  				  			
	 R17-2-4-E19-S3-2
	  	 	Yes	 	  	 	130.30	 	  	 	No	 	  	R17-2-4-E19-S3-2	  	 	Yes	 	  	 	130.30	 
	 R17-2-9-W0-S9-1
	  	 	Yes	 	  	 	309.60	 	  	 	Yes	 	  		  				  			
	 R17-2-9-W0-S9-4
	  	 	Yes	 	  	 	58.80	 	  	 	Yes	 	  		  				  			
		  				  	 	New	 	  	R17-2-4-E18-S5-1	  	 	Yes	 	  	 	1253.70	 
		  				  	 	New	 	  	R17-2-4-E18-N2-5	  	 	Yes	 	  	 	170.00	 
		  				  	 	New	 	  	R17-2-4-E21-N2-2	  	 	Yes	 	  	 	603.70	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Total Office Space
	  				  	 	7769.50	 	  				  	Total Office Space	  				  	 	3590.00	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
							
	 Operations Space
	  	Tenant
Finish	 	  	Current
Exhibits	 	  	 	 	  	 	  	 	 	  	 	 
	 R17-2-2-W27-N5-2
	  	 	Yes	 	  	 	85.00	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W27-S5-2
	  	 	Yes	 	  	 	85.00	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W24-S3-1
	  	 	No	 	  	 	1778.40	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W22-N1-3
	  	 	Yes	 	  	 	1084.60	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W23-S4-1
	  	 	Yes	 	  	 	563.40	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W23-S2-1
	  	 	Yes	 	  	 	559.10	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W22-NO-2
	  	 	Yes	 	  	 	188.80	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W23-S4-2
	  	 	Yes	 	  	 	484.20	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W13-S4-1
	  	 	No	 	  	 	776.70	 	  	 	Yes	 	  		  				  			
	 R17-2-2-W13-S5-2
	  	 	Yes	 	  	 	83.30	 	  	 	Yes	 	  		  				  			
	 R17-2-2-E2-S7-1
	  	 	Yes	 	  	 	420.60	 	  	 	No	 	  	R17-2-2-E2-S7-1	  	 	Yes	 	  	 	420.60	 
	 R17-2-2-E5-S2-4
	  	 	Yes	 	  	 	240.10	 	  	 	Yes	 	  		  				  			
	 R17-2-1-W28-S3-2
	  	 	Yes	 	  	 	148.20	 	  	 	Yes	 	  		  				  			
		  				  				  	 	New	 	  	R17-2-2-E8-S5-1	  	 	Yes	 	  	 	84.99	 
		  				  				  	 	New	 	  	R17-2-2-E11-S4-2	  	 	Yes	 	  	 	4300.00	 
		  				  				  	 	New	 	  	R17-2-2-E12-S4-2	  	 	No	 	  	 	782.70	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Total Operations
	  				  	 	6497.40	 	  				  	Total Operations	  				  	 	5588.29	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 


  
 May 1, 2015 









																							
	 Current Space
	  	Tenant
Finish	 	  	Sq. Ft.	 	  	Return
Y/N or
New	 	  	 After Changes
	  	Tenant
Finish	 	  	Sq. Ft.	 
	Basement Space (Written off space)	  				  				  				  		  				  			
	 R17-2-1-W18-S4-3
	  	 	No	 	  	 	903.00	 	  	 	Yes	 	  		  				  			
	 R17-1-1-W11S6-3
	  	 	No	 	  	 	400.00	 	  	 	Yes	 	  		  				  			
		  				  				  	 	New	 	  	Caged Area	  	 	No	 	  	 	500.00	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 
	 Total Basement
	  				  	 	1303.00	 	  				  	Total Basement	  				  	 	500.00	 
		  				  	  
	  
	 	  				  		  				  	  
	  
	 


  
 May 1, 2015 









			
	 Current Space
	  	 After July Changes

	 SIGNATORY SPACE - TERMINAL
	  	SIGNATORY SPACE - TERMINAL
	 Ticket Counter
	  	Ticket Counter
	R16-2-6-E6-N27-1	  	R16-2-6-E6-N27-1
	Ticket Office	  	Ticket Office
	R16-1-6-E3-N24-3	  	R16-1-6-E3-N24-3
	Baggage Service Office	  	Baggage Service Office
	R16-1-4-E4-N23-1	  	R16-1-4-E4-N23-1
	R16-1-5-E3-N24-1	  	R16-1-5-E3-N24-1
		
	SIGNATORY SPACE - CONC A	  	SIGNATORY SPACE - CONC A
	Hold Rooms	  	Hold Rooms
		  	R17-2-3-E16-S4-1 - A46
		  	R17-2-3-E11-S4-1 - A44
	R17-2-3-E8-S4-1 - A42	  	R17-2-3-E8-S4-1 - A42
	R17-2-3-E5-S4-1 - A40	  	R17-2-3-E5-S4-1 - A40
	R17-2-3-W11-S4-1-A38	  	R17-2-3-W11-S4-1 - A38
	R17-2-3-W18-S4-1 - A34/A36	  	R17-2-3-W18-S4-1 - A34/A36
	R17-2-3-W23-S4-1 - A32	  	R17-2-3-W23-S4-1 - A32
	R17-2-3-W26-S4-1 - A30	  	
	R17-2-3-W28-S4-1 - A28	  	
	R17-2-3-W28-N1-1 - A27/A31	  	
		
	Office Space	  	Office Space
	R17-2-3-W10-S4-1	  	
	R17-2-3-W13-S4-2	  	
	R17-2-3-W13-S4-3	  	
	R17-2-3-W13-S4-1	  	
	R17-2-4-W20-S5-1	  	
	R17-2-4-W20-N1-1	  	
	R17-2-4-E19-S3-2	  	R17-2-4-E19-S3-2
	R17-2-9-W0-S9-1	  	
	R17-2-9-W0-S9-4	  	
		  	R17-2-5-W5-N3-2
		  	R17-2-5-W5-N3-1
		  	R17-2-5-W4-N5-1
		  	R17-2-5-W4-N5-2
		
	Operations Space	  	
	R17-2-2-W27-N5-2	  	
	R17-2-2-W27-S5-2	  	
	R17-2-2-W24-S3-1	  	
	R17-2-2-W22-N1-3	  	
	R17-2-2-W23-S4-1	  	
	R17-2-2-W23-S2-1	  	
	R17-2-2-W22-N0-2	  	
	R17-2-2-W23-S4-2	  	
	R17-2-2-W13-S4-1	  	
	R17-2-2-W13-S5-2	  	
	R17-2-2-E2-S7-1	  	R17-2-2-E2-S7-1
	R17-2-2-E5-S2-4	  	
	R17-2-l-W28-S3*2	  	
		  	R17-2-1-E19-S5-1
		  	R17-2-2-E11-S4-2
		  	R17-2-2-E12-S4-2
	Basement Space (Written off space)	  	
	R17-2-1-W18-S4-3	  	New Caged Area
	R17-1-1-W11S6-3	  	New Office Area
		
	Total Basement	  	Total Basement









			
	 Current Space
	  	 After July Changes

	 TOTAL SIGNATORY
	  	TOTAL SIGNATORY
		
	 Concourse A Non-Signatory
	  	
	 Office
	  	
	 R17-2-3-W7-S4-1
	  	
		
	 Concourse A Non-Signatory Operations
	  	
	 R17-2-2-W13-S4-1
	  	
		
	 Terminal Non-Signatory Ticket Counter
	  	
	 R16-1-6-E6-N25-1