6-1162-KJJ-058 Southwest Airlines Co. P.O. Box 36611 - Love Field Dallas, Texas 75235 Subject:	Letter Agreement No. 6-1162-KJJ-058 to 		Purchase Agreement No. 1810 - *** This Letter Agreement amends Purchase Agreement No. 1810 dated January 19, 1994 (the Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Buyer) relating to the sale by Boeing and the purchase by Buyer of ninety-four (94) Block "T" Model 737-7H4 aircraft (the Aircraft) and to Letter Agreement No. 6-1162-RLL-933R9 dated even date herewith, entitled "Option Aircraft," to the extent it relates to the sale by Boeing and purchase by Buyer of twenty-five (25) Block "U" additional Model 737-7H4 aircraft (the Option Aircraft) and one hundred seventy one (171) Block "V" Rollover Option Aircraft (the Rollover Option Aircraft). All terms used herein and in the Agreement, and not defined herein, will have the same meaning as in the Agreement. *** 1. *** *** 	Pursuant to 17 CFR, 240.24b-2, confidential 	information has been omitted and has been filed 	separately with the Securities and Exchange 	Commission pursuant to a Confidential Treatment 	Application filed with the Commission. 	1.1 	*** 	1.2	*** 	1.3	*** 	1.4	*** 2.	*** 3.	*** 4.	Confidential Treatment. Buyer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential. Buyer agrees that it will treat this Letter Agreement and the information contained herein as confidential and will not, without the prior written consent of Boeing, disclose this Letter Agreement or any information contained herein to any other person or entity, except as provided in Letter Agreement 6-1162-RLL-934, as amended. Very truly yours, THE BOEING COMPANY By /s/ Alan Mulally Its Attorney-in-Fact 	President 	Commercial Airplanes Group ACCEPTED AND AGREED TO as of this date: June 22, 2000 SOUTHWEST AIRLINES CO. By /s/ Herb Kelleher Its CEO Southwest Airlines Co. 6-1162-RLL-058 P.A. No. 1810	SA-13 K/SWA