Supplemental Agreement No. 9 to Purchase AgreementNo. 2484 between TheBoeing Company and UnitedAirlines, Inc. Relating to Boeing Model 787 Aircraft

Exhibit 10.4

CONFIDENTIAL MATERIAL APPEARING IN THIS DOCUMENT HAS BEEN OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION IN ACCORDANCE WITH THE SECURITIES ACT OF 1933, AS AMENDED, AND RULE 24B-2 PROMULGATED THEREUNDER. OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS.

Supplemental Agreement No. 9

to

Purchase Agreement No. 2484

between

The Boeing Company

and

United Airlines, Inc.

Relating to Boeing Model 787 Aircraft

THIS SUPPLEMENTAL AGREEMENT NO. 9, entered into as of June 6, 2014, by and between THE BOEING COMPANY (Boeing) and UNITED AIRLINES, INC. (a Delaware corporation formerly known as Continental Airlines, Inc.) (Customer);

WHEREAS, the parties hereto entered into Purchase Agreement No. 2484 dated December 29, 2004 (Purchase Agreement), as amended and supplemented, relating to Boeing Model 787 aircraft (Aircraft);

WHEREAS, Boeing and Customer previously executed Letter Agreement No. CAL-PA-2484-LA-1302248 “Aircraft Acceleration from *** to *** ”;

WHEREAS, Boeing and Customer have agreed to reschedule one (1) Model 787-9 Aircraft as follows:

NOW THEREFORE, in consideration of the mutual covenants herein contained, the parties agree to amend the Purchase Agreement as follows:

BOEING/UNITED AIRLINES, INC. PROPRIETARY

The Agreement will be deemed to be supplemented to the extent herein provided as of the date hereof and as so supplemented will continue in full force and effect.

EXECUTED IN DUPLICATE as of the day and year first written above.

BOEING/UNITED AIRLINES, INC. PROPRIETARY

TABLE OF CONTENTS

TABLE OF CONTENTS, CONTINUED

TABLE OF CONTENTS, CONTINUED

Table 1

Purchase Agreement No. 2484

787-8 Aircraft Delivery, Description, Price and Advance Payments

(787-8/GE/2006$/CPI)

Table 1

Purchase Agreement No. 2484

787-9 Aircraft Delivery, Description, Price and Advance Payments

(787-9/GE/2006$/CPI)

		The Boeing Company P.O. Box 3707 Seattle, WA 98124-2207

CAL-PA-2484-LA-1302248

United Airlines, Inc.

233 South Wacker Drive

Chicago, Illinois 60606

U.S.A.

This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement. All terms used but not defined in this Letter Agreement shall have the same meaning as in the Purchase Agreement.

Boeing and Customer agree to reschedule the contract delivery month of the following Aircraft:

The terms of this Letter Agreement will supersede the corresponding terms of the Purchase Agreement. Boeing and Customer will execute a supplemental agreement to the Purchase Agreement as soon as reasonably practicable after the execution of this Letter Agreement. The execution of the supplemental agreement is to facilitate contract administration and is not a condition to the effectiveness of his Letter Agreement. In the event of any conflict between the terms and conditions of this Letter Agreement and the supplemental agreement, the terms and conditions of this Letter Agreement shall control.

[Remainder of page intentionally left blank.]

BOEING PROPRIETARY

Very truly yours,

BOEING PROPRIETARY