Exhibit 10.14



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| |  | 6-1162-ELP-0784                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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| |  | United Air Lines, Inc.
P. O. Box 66100 Chicago, IL
60601-0100                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
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| |  | Subject:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |  | [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Matters                                            
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
| |  | Reference:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  | Purchase Agreement No. 3427 (Purchase Agreement) between The Boeing Company (Boeing) and United Air Lines, Inc. (Customer)
relating to Model 787-8 aircraft (Aircraft)
| | 
| |  | This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement but is not
part of the Purchase Agreement. All terms used but not defined in this Letter Agreement have the same meaning as in the Purchase Agreement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
| | 
| |  | Definition of Terms: 
[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
| | 
| |  | 1. Notification. 
Boeing will give written notice to Customer as soon as Boeing concludes that [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY
WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]  2.
[CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 
3. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
 4. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A
REQUEST FOR CONFIDENTIAL TREATMENT]  5. [CONFIDENTIAL MATERIAL
OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] 
6. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT]
 [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT
TO A REQUEST FOR CONFIDENTIAL TREATMENT] Matters BOEING / UNITED PROPRIETARY



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|LOGO |  | UNITED AIR LINES, INC.
6-1162-ELP-0784 
7. [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT].
 8. Assignment.
 The rights and obligations described in this Letter Agreement are provided to
Customer in consideration of Customer becoming the operator of the Aircraft and can only be assigned, in whole or in part, pursuant to Article 9 of the AGTA as amended by Letter Agreement No. 6-1162-IRS-0184.
 9. Confidential Treatment.
 Customer and Boeing agree and understand that this Letter Agreement is strictly
confidential and only be shared with employees of Boeing and Customer but not with consultants or any other professional advisors who are not employees of the either party without prior consent of the other party. Customer and Boeing understand that
certain commercial and financial information contained in this Letter Agreement are considered by Boeing and Customer as confidential and are subject to the terms and conditions set forth in Letter Agreement No. 6-1162-IRS-0182.
 [CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SEC PURSUANT
TO A REQUEST FOR CONFIDENTIAL TREATMENT] Matters BOEING / UNITED PROPRIETARY



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|LOGO |                                                                                                                                                        | UNITED AIR LINES, INC.
6-1162-ELP-0784 
Notwithstanding above, Customer and Boeing agree and understand that this Letter Agreement is strictly confidential and only be shared with employees of
Boeing and Customer but not with consultants or any other professional advisors who are not employees of the either party without prior consent of the other party. 
Very truly yours, 
THE BOEING COMPANY
|     | By                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                             | /s/ Nobuko
Wiles                                     |  | 
|     | Its                                                                                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                             | Attorney-In-Fact                                     |  | 
|     | ACCEPTED AND AGREED TO this
 Date: February 19, 2010
 UNITED AIR LINES, INC.                                                                          
|     | By                                                                                                                                                     |                                                                                                                                                                                                                                                                                                                                                                                                             | /s/ Kathryn A.
Mikells                               |  | 
|     | Its                                                                                                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                             | Executive Vice President
and Chief Financial Officer |  | 
|     | [CONFIDENTIAL MATERIAL OMITTED AND FILED
SEPARATELY WITH THE SEC PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT] Matters BOEING / UNITED PROPRIETARY