Supplemental Agreement No. 104 to Purchase Agreement No. 1810, dated January 19, 1994, between The Boeing Company and the Company

THIS SUPPLEMENTAL AGREEMENT No. 104 (SA-104) is entered into as of February 22, 2018, by and between THE BOEING COMPANY, a Delaware corporation with principal offices in Seattle, Washington (Boeing) and SOUTHWEST AIRLINES CO., a Texas corporation with principal offices in Dallas, Texas (Buyer).

WHEREAS, Buyer and Boeing entered into Purchase Agreement No. 1810 dated January 19, 1994, as amended and supplemented (Purchase Agreement), relating to the purchase and sale of Boeing Model 737-7H4 aircraft (737-7H4 Aircraft) and 737-8H4 aircraft (737-8H4 Aircraft), collectively the “Aircraft”. This SA-104 is an amendment to and is incorporated into the Purchase Agreement. Capitalized terms used herein but not otherwise defined shall have the meaning set forth in the Purchase Agreement; and

WHEREAS, Boeing and Buyer agree to amend the Purchase Agreement by revising the delivery month of one (1) Model 737-8H4 Aircraft identified by MSN 64348 (Subject Aircraft) from July 2018 to August 2018.

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

1. TABLE OF CONTENTS

The Table of Contents is deleted in its entirety and replaced by a new Table of Contents (attached), which lists the table revised by this SA-104 and is identified by “SA-104”. Such revised Table of Contents, by this reference, is incorporated in the Purchase Agreement.

Table 1d, Aircraft Information Table - Block 800LUV Aircraft (non-ETOPS Configuration), is deleted in its entirety and replaced by a new Table 1d (attached). The new Table 1d reflects the revised delivery month for one (1) Aircraft.

3. LETTER AGREEMENT.

Letter Agreement No. SWA-PA-1810-LA-1801210, entitled “Revision to Contract Delivery Month of One (1) 737-8H4 (MSN64348),” is hereby incorporated into the Purchase Agreement.

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

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

Customer and Boeing have agreed to revise the delivery date (month) of the subject aircraft from July 2018 to August 2018 (Re-contracted Firm Aircraft). In consideration of the Re-contracted Firm Aircraft, Customer will ***

Customer understands and agrees that the information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Customer agrees to limit the disclosure of the contents of this Letter Agreement to (a) its directors and officers, (b) employees of Customer with a need to know the contents for performing its obligations (including, without limitation, those employees performing accounting, finance, administration and other functions necessary to finance and purchase, deliver or lease the Aircraft) and who understand they are not to disclose its contents to any other person or entity (other than those to whom disclosure is permitted by this Article) without the prior written consent of Boeing and (c) any auditors and attorneys of Customer who have a need to know such information and have signed a confidentiality agreement in the same form and substance similar to this Article, or are otherwise bound by a confidentiality obligation. Disclosure to other parties is not permitted without Boeing’s consent except as may be required by applicable law or governmental regulations. Customer shall be fully responsible to Boeing for compliance with such obligations.