EX-10.1 2 exhibit101sa-12topax3729re.htm EX-10.1 BOEING SUPPLEMENTAL AGREEMENT NO.12

SUPPLEMENTAL AGREEMENT NO. 12
to
Purchase Agreement No. 03729
between
THE BOEING COMPANY
and
SOUTHWEST AIRLINES CO.
Relating to Boeing Model 737-8 and 737-7 Aircraft

THIS SUPPLEMENTAL AGREEMENT No. 12 (SA-12), entered into as of March 24, 2021, is made between THE BOEING COMPANY, a Delaware corporation (Boeing), and SOUTHWEST AIRLINES CO., a Texas corporation (Customer).

RECITALS:

WHEREAS, Customer and Boeing entered into Purchase Agreement Number PA-03729 dated December 13, 2011, as amended and supplemented, (Purchase Agreement) relating to the purchase and sale of Boeing Model 737-8 (737-8 Aircraft) and Model 737-7 aircraft (737-7 Aircraft); collectively the “Aircraft”. This SA-12 is an amendment to and is incorporated into the Purchase Agreement. Capitalized terms used herein but not otherwise defined will have the meaning set forth in the Purchase Agreement;
WHEREAS, Boeing and Customer agree to the sale and purchase of an additional one hundred (100) Firm 737-7 MAX Aircraft, to provide one hundred fifty (150) 2020 Option Aircraft, and five (5) additional Original Option Aircraft (Original Option Aircraft is defined as the options contained on Attachment 1-A to Letter Agreement No. 1106474R3 entitled “Option Aircraft”);
WHEREAS, Boeing has offered and Customer has accepted sixty (60) 737-8 Remarket Aircraft for substitution as Original Option Aircraft or Firm Aircraft;
WHEREAS, Boeing and Customer agree to amend the Purchase Agreement to include [***];
WHEREAS, Boeing and Customer agree to amend the Purchase Agreement to document Customer’s substitution of seventy (70) firm Model 737-8 Aircraft to firm Model 737-7 Aircraft;
WHEREAS, Boeing and Customer agree to amend the Purchase Agreement to revise the scheduled delivery stream and identify nominal delivery months for the Aircraft;
[***] = Certain identified information has been excluded from the exhibit because it is both not material and is of the type that the registrant treats as private or confidential.

| 1 |
SWA-PA-03729 | BOEING PROPRIETARY | SA-12

WHEREAS, Boeing and Customer agree to amend the Purchase Agreement terms on [***];
WHEREAS, Customer has requested and Boeing has agreed to [***];
WHEREAS, Boeing and Customer agree to amend the Purchase Agreement to include [***]; and
WHEREAS, Boeing and Customer agree to amend the Purchase Agreement to make certain changes to the Letter Agreements as a result of the respective changes in this Supplemental Agreement.
NOW, THEREFORE, the parties agree that the Purchase Agreement is amended as set forth below and otherwise agree as follows:
1.TABLE OF CONTENTS.
The Table of Contents of the Purchase Agreement is deleted in its entirety and replaced with a new Table of Contents (attached), which lists the Tables, Exhibits, and Letter Agreements revised by this SA-12 and is identified by “SA-12”. Such revised Table of Contents is incorporated into the Purchase Agreement by this reference.
2.Tables.
Table 1A, Aircraft Delivery, Description, Price and Advance Payments – 737-8 Aircraft, is deleted in its entirety and replaced by a new Table 1A (identified by "SA-12") attached hereto and incorporated into the Purchase Agreement by this reference.
Table 1B, Aircraft Delivery, Description, Price and Advance Payments – 737-7 Aircraft, is deleted in its entirety and replaced by a new Table 1B (identified by "SA-12") attached hereto and incorporated into the Purchase Agreement by this reference.
3.EXHIBITS.
3.1 Exhibit A3, 737-8 Remarket Aircraft Configuration, is added to and incorporated into the Purchase Agreement by this reference.
3.2 Exhibit B-1, Remarket Aircraft Technical Acceptance and Delivery Requirements and Responsibilities, is added to and incorporated into the Purchase Agreement by this reference.

| 2 |
SWA-PA-03729 | BOEING PROPRIETARY | SA-12

4. LETTER AGREEMENTS.
4.1. Letter Agreement SWA-PA-03729-LA-1106471R1, Substitute Aircraft, is deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1106471R2.
4.2. Letter Agreement SWA-PA-03729-LA-1106473R1, [***], deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1106473R2.
4.3. Letter Agreement SWA-PA-03729-LA-1106474R2, Option Aircraft, and its Attachment 1 are deleted in their entirety and are replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1106474R3 and its Attachment 1.
4.4. Letter Agreement SWA-PA-03729-LA-1106475R3, [***], is deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1106475R4.
4.5. Letter Agreement SWA-PA-03729-LA-1106484R1, [***], is deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1106484R2.
4.6. Letter Agreement SWA-PA-03729-LA-1301170R2, [***], is deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1301170R3.
4.7. Letter Agreement SWA-PA-03729-LA-1602486, [***], is deleted in its entirety and is replaced with the attached revised Letter Agreement SWA-PA-03729-LA-1602486R1.
4.8. Letter Agreement SWA-PA-03729-LA-2100594, 737-8 Remarket Aircraft, is added to and incorporated into the Purchase Agreement by this reference.
4.9. Letter Agreement SWA-PA-03729-LA-2100700, Remarket Aircraft Open Configuration Matters, is added to and incorporated into the Purchase Agreement by this reference.
4.10. Letter Agreement SWA-PA-03729-LA-2100811, [***], is added to and incorporated into the Purchase Agreement by this reference.
4.11. Letter Agreement SWA-PA-03729-LA-2100812, [***], is added to and incorporated into the Purchase Agreement by this reference

SWA-PA-03729 | 3 | SA-12
| BOEING PROPRIETARY |

4.12. Letter Agreement SWA-PA-03729-LA-2100813, [***], is added to and incorporated into the Purchase Agreement by this reference.
4.13. Letter Agreement SWA-PA-03729-LA-2100814, [***], is added to and incorporated into the Purchase Agreement by this reference.
4.14. Letter Agreement SWA-PA-03729-LA-2100819, [***] is added to and incorporated into the Purchase Agreement by this reference.
4.15. Letter Agreement SWA-PA-03729-LA-2100825, [***], is added to and incorporated into the Purchase Agreement by this reference.
4.16. Letter Agreement SWA-PA-03729-LA-2100841, [***], is added to and incorporated into the Purchase Agreement by this reference.
4.17. Letter Agreement SWA-PA-03729-LA-2100984, [***], is added to and incorporated into the Purchase Agreement by this reference.
5. ADVANCE PAYMENT IMPACTS.
Due to the substitution of seventy (70) 737-8 to 737-7 Aircraft, Customer has[***]
6. IMPACTS TO PREVIOUSLY DELIVERED AIRCRAFT.
In accordance with Letter Agreement SWA-PA-03729-LA-2100819, [***]
7. [***]

SWA-PA-03729 | 4 | SA-12
| BOEING PROPRIETARY |

The Purchase Agreement is deemed to be supplemented to the extent herein provided and as so supplemented will continue in full force and effect.
EXECUTED IN DUPLICATE as of the day and year first above written.

THE BOEING COMPANY |  | SOUTHWEST AIRLINES CO.
By: /s/ Carson J May |  | By: /s/ Michael Van de Ven
Name: Carson J May |  | Name: Michael Van de Ven
Its: Attorney-in-Fact |  | Its: Chief Operating Officer

SWA-PA-03729 | 5 | SA-12
| BOEING PROPRIETARY |

TABLE OF CONTENTS
ARTICLES | TITLES
Article 1 | Quantity, Model and Description | SA-2
Article 2 | Delivery Schedule
Article 3 | Price
Article 4 | Payment | SA-2
Article 5 | Additional Terms
TABLE | TITLE
1A | 737-8 Aircraft Information Table | SA-12
1B | 737-7 Aircraft Information Table | SA-12
EXHIBIT
A1 | 737-8 Aircraft Configuration | SA-11
A2 | 737-7 Aircraft Configuration | SA-8
A3 | 737-8 Remarket Aircraft Configuration | SA-12
B* | Aircraft Delivery Requirements and Responsibilities
B-1 | Remarket Aircraft Technical | SA-12
| Acceptance and Delivery Requirements and Responsibilities
SUPPLEMENTAL EXHIBITS | TITLES
AE1* | Escalation Adjustment/Airframe and Optional Features
BFE1 | BFE Variables for 737-8 | SA-7
BFE2 | BFE Variables for 737-7 | SA-8
CS1 | Customer Support Variables
CS1-7MAX | Customer Support Variables SA-2
EE1* | Engine Escalation/Engine Warranty and Patent Indemnity

SWA-PA-03729 |  | SA-12
|  | Page 1
| BOEING PROPRIETARY |

SLP1* | Service Life Policy Components
LETTER AGREEMENTS | TITLES
SWA-PA-03729-LA-1106463R3 | Open Matters | SA-8
SWA-PA-03729-LA-1106464* | [***]
SWA-PA-03729-LA-1106465* | [***]
SWA-PA-03729-LA-1106466 | [***]
SWA-PA-03729-LA-1106467R2 | [***] | SA-8
SWA-PA-03729-LA-1106468* | [***]
SWA-PA-03729-LA-1106469R1 | [***] | SA-2
SWA-PA-03729-LA-1106470R1 | [***] | SA-2
SWA-PA-03729-LA-1106471R2 | Substitute Aircraft | SA-12
SWA-PA-03729-LA-1106473R2 | [***]
SWA-PA-03729-LA-1106474R3 | Option Aircraft | SA-12
SWA-PA-03729-LA-1106475R4 | [***] | SA-12
SWA-PA-03729-LA-1106476R2 | [***] | SA-8
SWA-PA-03729-LA-1106477* | [***]
SWA-PA-03729-LA-1106478 | [***]
SWA-PA-03729-LA-1106479R1 | [***] | SA-2
SWA-PA-03729-LA-1106480R1 | [***] | SA-2
SWA-PA-03729-LA-1106481R2 | [***] | SA-2
SWA-PA-03729-LA-1106482* | [***]
SWA-PA-03729-LA-1106483* | [***]
SWA-PA-03729-LA-1106484R2 | [***] | SA-12
SWA-PA-03729-LA-1106485* | [***]

SWA-PA-03729 |  | SA-12
|  | Page 2
| BOEING PROPRIETARY |

LETTER AGREEMENTS | TITLES
SWA-PA-03729-LA-1209080 | [***] | SA-1
SWA-PA-03729-LA-1210419 | [***] | SA-1
SWA-PA-03729-LA-1300943 | [***] | SA-2
SWA-PA-03729-LA-1301168R3 | [***] | SA-6
SWA-PA-03729-LA-1301170R3 | [***] | SA-12
SWA-PA-03729-LA-1400371 | [***] | SA-7
SWA-PA-03729-LA-1503792 | Service Ready Operational Validation | SA-6
SWA-PA-03729-LA-1500831 | [***] | SA-7
SWA-PA-03729-LA-1602486R1 | [***] | SA-12
SWA-PA-03729-LA-2100594 | 737-8 Remarket Production Aircraft | SA-12
SWA-PA-03729-LA-2100700 | 737-8 Open Configuration Matters – Remarket Production Aircraft | SA-12
SWA-PA-03729-LA-2100811 | [***] | SA-12
SWA-PA-03729-LA-2100812 | [***] | SA-12
SWA-PA-03729-LA-2100813 | [***] | SA-12
SWA-PA-03729-LA-2100814 | [***] | SA-12
SWA-PA-03729-LA-2100819 | [***] | SA-12
SWA-PA-03729-LA-2100825 | [***] | SA-12
SWA-PA-03729-LA-2100841 | [***] | SA-12

SWA-PA-03729 |  | SA-12
|  | Page 3
| BOEING PROPRIETARY |

LETTER AGREEMENTS | TITLES
SWA-PA-03729-LA-2100984 | [***] | SA-12

* Denotes revision to Page 1 or Page 2 only to reference 737-7 (SA-2)

SWA-PA-03729 |  | SA-12
|  | Page 4
| BOEING PROPRIETARY |

INACTIVE / DELETED TABLES, EXHIBITS, AND LETTER AGREEMENTS
RESTRICTED LETTER AGREEMENTS

Letter Agreement | Title | Last Updated under SA | Current Status
SWA-PA-03729-LA-1106472R1 | [***] | SA-2 | Deleted under SA-4
SWA-PA- 01810/03729-LA- 1301169 | [***] | SA-2 | Deleted under SA-4

SWA-PA-03729 |  | SA-12
|  | Page 5
| BOEING PROPRIETARY |

Table 1A To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-8 Aircraft

Airframe Model/MTOW: 737-8 Engine Model/Thrust: CFMLEAP-1B28(2) | 181,200 pounds 28,800 pounds | Detail Specification: Airframe Price Base Year/Escalation Formula: | D019A008-P (5/1/2017) Jul-11 | Non-Standard
Airframe Price: | [***] | Engine Price Base Year/Escalation Formula: | N/A | N/A
Optional Features: | [***] |  |  |
Sub-Total of Airframe and Features: | [***] | Airframe Escalation Data: |  |
Engine Price (Per Aircraft): | [***] | Base Year Index (ECI): | [***] |
Aircraft Basic Price (Excluding BFE/SPE): | [***] | Base Year Index (CPI): | [***] |
Buyer Furnished Equipment (BFE) Estimate: | [***] |  |  |
Seller Purchased Equipment (SPE) Estimate: | [***] |  |  |

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer Serial Number** | Escalation Factor | Aircraft Block | Notes | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jul-2017 | Jul-2017 | 1 | [***] | 36929† | [***] | A | Note 1 | [***] | [***] | [***] | [***] | [***]
Jul-2017 | Jul-2017 | 2 | [***] | 42558†, 42559† | [***] | C | Note 1 | [***] | [***] | [***] | [***] | [***]
Aug-2017 | Aug-2017 | 3 | [***] | 36979, 36930, 36984 | [***] | A | Note 1 | [***] | [***] | [***] | [***] | [***]
Aug-2017 | Aug-2017 | 1 | [***] | 42567 | [***] | C | Note 1 | [***] | [***] | [***] | [***] | [***]
Aug-2017 | Aug-2017 | 2 | [***] | 42563, 42566† | [***] | C | Note 1 | [***] | [***] | [***] | [***] | [***]
Sep-2017 | Sep-2017 | 1 | [***] | 36934 | [***] | A | Note 1 | [***] | [***] | [***] | [***] | [***]
Oct-2017 | Oct-2017 | 1 | [***] | 42544 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Oct-2017 | Oct-2017 | 1 | [***] | 42570 | [***] | C |  | [***] | [***] | [***] | [***] | [***]
Nov-2017 | Nov-2017 | 1 | [***] | 36988† | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Dec-2017 | Dec-2017 | 1 | [***] | 42554† | [***] | C |  | [***] | [***] | [***] | [***] | [***]
Mar-2018 | Mar-2018 | 1 | [***] | 36989† | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Mar-2018 | Mar-2018 | 1 | [***] | 42571 | [***] | C |  | [***] | [***] | [***] | [***] | [***]
Apr-2018 | Apr-2018 | 1 | [***] | 42546 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Jun-2018 | Jun-2018 | 1 | [***] | 42572 | [***] | C |  | [***] | [***] | [***] | [***] | [***]
Jun-2018 | Jun-2018 | 1 | [***] | 42547 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Aug-2018 | Aug-2018 | 3 | [***] | 42548, 37019, 42549 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Aug-2018 | Aug-2018 | 1 | [***] | 42574 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Aug-2018 | Aug-2018 | 1 | [***] | 42575 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Sep-2018 | Sep-2018 | 2 | [***] | 42573, 42576 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Dec-2018 | Dec-2018 | 1 | [***] | 42577 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Dec-2018 | Dec-2018 | 4 | [***] | 37042, 42550, 42551, 37043 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Feb-2021 | Jul-2019 | 1 | [***] | 42633 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2021 | Jul-2019 | 2 | [***] | 65437, 65436 | [***] | E OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2021 | Aug-2019 | 1 | [***] | 42634 | [***] |  |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107813 / 108198 / 108732 | Boeing Proprietary | Page 1

Table 1A To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-8 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer Serial Number** | Escalation Factor | Aircraft Block | Notes | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Feb-2021 | Dec-2019 | 1 | [***] | 36722 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Feb-2021 | Dec-2019 | 1 | [***] | 42537 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Aug-2019 | 1 | [***] | 42641 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Sep-2019 | 1 | [***] | 65471 | [***] | E OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2021 | Nov-2019 | 1 | [***] | 42536 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Aug-2019 | 1 | [***] | 42637 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Sep-2019 | 1 | [***] | 65438 | [***] | E OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2021 | Oct-2019 | 2 | [***] | 42646, 42662 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Oct-2019 | 2 | [***] | 42647, 42661 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Oct-2019 | 1 | [***] | 65439 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Mar-2021 | Oct-2019 | 1 | [***] | 65440 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2021 | Nov-2019 | 1 | [***] | 42664 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2021 | Nov-2019 | 1 | [***] | 65473 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Jan-2026 | Dec-2019 | 1 | [***] | 42666 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2026 | Feb-2020 | 1 | [***] | 36727 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Feb-2026 | Mar-2020 | 1 | [***] | 42580 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2026 | Mar-2020 | 1 | [***] | 42579 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2026 | Apr-2020 | 1 | [***] | 42539 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Apr-2026 | Apr-2020 | 1 | [***] | 65441 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Jun-2026 | May-2020 | 1 | [***] | 42669 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jul-2026 | May-2020 | 1 | [***] | 42553 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
May-2026 | May-2020 | 1 | [***] | 35970 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Aug-2026 | Jun-2020 | 1 | [***] | 42607 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Sep-2026 | Jun-2020 | 1 | [***] | 65442 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Nov-2026 | Jul-2020 | 1 | [***] | 42665 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Oct-2026 | Jul-2020 | 1 | [***] | 42540 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Nov-2026 | Jul-2020 | 1 | [***] | 65443 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Dec-2026 | Jul-2020 | 1 | [***] | 65444 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2027 | Aug-2020 | 2 | [***] | 42672, 42673 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2027 | Aug-2020 | 1 | [***] | 42541 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Mar-2027 | Aug-2020 | 1 | [***] | 65445 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2027 | Aug-2020 | 1 | [***] | 65446 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
May-2027 | Sep-2020 | 1 | [***] | 42674 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jun-2027 | Sep-2020 | 1 | [***] | 42691 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jul-2027 | Sep-2020 | 1 | [***] | 42694 | [***] |  |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107813 / 108198 / 108732 | Boeing Proprietary | Page 2

Table 1A To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-8 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer Serial Number** | Escalation Factor | Aircraft Block | Notes | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Apr-2027 | Sep-2020 | 1 | [***] | 33941 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Aug-2027 | Sep-2020 | 1 | [***] | 65472 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Sep-2027 | Sep-2020 | 1 | [***] | 65447 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Oct-2027 | Sep-2020 | 1 | [***] | 65448 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Nov-2027 | Oct-2020 | 1 | [***] | 42615 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Nov-2027 | Oct-2020 | 1 | [***] | 42543 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Dec-2027 | Oct-2020 | 1 | [***] | 65474 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2028 | Nov-2020 | 2 | [***] | 42697, 42699 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2028 | Nov-2020 | 1 | [***] | 36733 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Mar-2028 | Nov-2020 | 1 | [***] | 65475 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2028 | Dec-2020 | 1 | [***] | 42703 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2028 | Dec-2020 | 1 | [***] | 33940 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
May-2028 | Jan-2021 | 1 | [***] | 35974 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Jun-2028 | Jan-2021 | 1 | [***] | 65450 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Jul-2028 | Jan-2021 | 1 | [***] | 65449 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Sep-2028 | Feb-2021 | 1 | [***] | 65451 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Aug-2028 | Feb-2021 | 1 | [***] | 65835 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Oct-2028 | Mar-2021 | 1 | [***] | 42648 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Nov-2028 | Mar-2021 | 1 | [***] | 65452 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Nov-2028 | Apr-2021 | 1 | [***] | 42650 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Dec-2028 | Apr-2021 | 1 | [***] | 42651 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2029 | Apr-2021 | 1 | [***] | 42649 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2029 | Apr-2021 | 1 | [***] | 65454 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2029 | Apr-2021 | 1 | [***] | 65453 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2029 | May-2021 | 1 | [***] | 42652 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2029 | May-2021 | 1 | [***] | 42653 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2029 | May-2021 | 1 | [***] | 42654 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2029 | May-2021 | 1 | [***] | 65455 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Mar-2029 | May-2021 | 1 | [***] | 65456 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Apr-2029 | Jun-2021 | 3 | [***] | 42655, 42656, 42670 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
May-2029 | Jun-2021 | 1 | [***] | 65457 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
May-2029 | Jul-2021 | 1 | [***] | 42658 | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jun-2029 | Jul-2021 | 1 | [***] | 65460 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Jul-2029 | Jul-2021 | 1 | [***] | 65459 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Jun-2029 | Jul-2021 | 1 | [***] | 65458 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107813 / 108198 / 108732 | Boeing Proprietary | Page 3

Table 1A To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-8 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer Serial Number** | Escalation Factor | Aircraft Block | Notes | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
May-2029 | Jul-2021 | 1 | [***] | 65834 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Sep-2029 | Aug-2021 | 1 | [***] | 65461 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Jul-2029 | Aug-2021 | 1 | [***] | 65836 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Aug-2029 | Aug-2021 | 1 | [***] | 65837 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Aug-2029 | Aug-2021 | 1 | [***] | 65838 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Aug-2029 | Aug-2021 | 1 | [***] | 65839 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Sep-2029 | Aug-2021 | 1 | [***] | 66974 | [***] |  | Note 4 | [***] | [***] | [***] | [***] | [***]
Nov-2029 | Sep-2021 | 1 | [***] | 65462 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Oct-2029 | Sep-2021 | 1 | [***] | 65463 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Oct-2029 | Sep-2021 | 1 | [***] | 65840 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Oct-2029 | Sep-2021 | 1 | [***] | 65841 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Nov-2029 | Oct-2021 | 1 | [***] | 65466 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Dec-2029 | Oct-2021 | 2 | [***] | 65465, 65464 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Jan-2030 | Nov-2021 | 1 | [***] | 65467 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Jan-2030 | Dec-2021 | 1 | [***] | 65468 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Jan-2030 | Dec-2021 | 2 | [***] | 65842, 65843 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Feb-2030 | Jan-2022 | 1 | [***] | 65469 | [***] | D OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2030 | Jan-2022 | 1 | [***] | 65470 | [***] | OPEX |  | [***] | [***] | [***] | [***] | [***]
Feb-2030 | Apr-2022 | 1 | [***] | 65844 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Mar-2030 | Jul-2022 | 3 | [***] | 65855, 65853, 65851 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Mar-2030 | Aug-2022 | 1 | [***] | 65845 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Apr-2030 | Aug-2022 | 2 | [***] | 65847, 65849 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Apr-2030 | Oct-2022 | 2 | [***] | 65857, 65859 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
May-2030 | Dec-2022 | 1 | [***] | 65861 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
May-2030 | Mar-2023 | 1 | [***] | 36732 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
May-2030 | Apr-2023 | 1 | [***] | 38806 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
May-2030 | Jun-2023 | 1 | [***] | 37034 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Jun-2030 | Aug-2023 | 1 | [***] | 42552 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Jun-2030 | Oct-2023 | 1 | [***] | 42538 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Jun-2030 | Nov-2023 | 1 | [***] | 38815 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Jul-2030 | Mar-2024 | 3 | [***] | 38817, 35968, 35972 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Jul-2030 | Apr-2024 | 1 | [***] | 36736 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Aug-2030 | Jun-2024 | 1 | [***] | 42542 | [***] | A |  | [***] | [***] | [***] | [***] | [***]
Aug-2030 | Jul-2024 | 2 | [***] | 35963, 35967 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Aug-2030 | Sep-2024 | 1 | [***] | 36730 | [***] | B |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107813 / 108198 / 108732 | Boeing Proprietary | Page 4

Table 1A To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-8 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer Serial Number** | Escalation Factor | Aircraft Block | Notes | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Sep-2030 | Nov-2024 | 1 | [***] | 35971 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Sep-2030 | Dec-2024 | 1 | [***] | 35975 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Sep-2030 | Jan-2025 | 2 | [***] | 38804, 38805 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Oct-2030 | Jan-2025 | 2 | [***] | 65863, 65865 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Oct-2030 | Feb-2025 | 1 | [***] | 36729 | [***] | B |  | [***] | [***] | [***] | [***] | [***]
Nov-2030 | Feb-2025 | 2 | [***] | 65868, 65869 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Nov-2030 | Mar-2025 | 2 | [***] | 65870, 65871 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Dec-2030 | Apr-2025 | 2 | [***] | 65872, 65873 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Dec-2030 | May-2025 | 2 | [***] | 65846, 65848 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Jan-2031 | Jun-2025 | 1 | [***] | 65852 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Feb-2031 | Jun-2025 | 1 | [***] | 65850 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Mar-2031 | Jul-2025 | 1 | [***] | 65854 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Apr-2031 | Jul-2025 | 1 | [***] | 65856 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
May-2031 | Aug-2025 | 1 | [***] | 65860 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Jun-2031 | Aug-2025 | 1 | [***] | 65858 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Jul-2031 | Sep-2025 | 1 | [***] | 65862 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Aug-2031 | Oct-2025 | 1 | [***] | 65864 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Sep-2031 | Nov-2025 | 1 | [***] | 65866 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]
Oct-2031 | Dec-2025 | 1 | [***] | 65867 | [***] | OPEX | Note 3 | [***] | [***] | [***] | [***] | [***]

Total: | 180

* [***]
** Manufacturer Serial Numbers (MSN) are for reference only and are subject to change.
† [***]
Notes:
(1) [***]
(2) [***]
(3) [***]
(4) [***]

|  | SA-12
SWA-PA-03729 107813 / 108198 / 108732 | Boeing Proprietary | Page 5

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Airframe Model/MTOW: | 737-7 | 177,000 pounds | Detail Specification: | D019A008SWA17P-1
Engine Model/Thrust: | CFMLEAP-1B27C | 26,400 pounds | Airframe Price Base Year/Escalation Formula: | Jul-11 | ECI-MFG/CPI
Airframe Price: |  | [***] | Engine Price Base Year/Escalation Formula: | N/A | N/A
Optional Features: |  |  | [***] |  |  |
Sub-Total of Airframe and Features: |  |  | [***] | Airframe Escalation Data: |  |
Engine Price (Per Aircraft): |  |  | [***] | Base Year Index (ECI): |  | [***]
Aircraft Basic Price (Excluding BFE/SPE): |  |  | [***] | Base Year Index (CPI): |  | [***]
Buyer Furnished Equipment (BFE) Estimate: | [***] |  |  |
Seller Purchased Equipment (SPE) Estimate: | [***] |  |  |

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jan-22 | Apr-2019 | 3 | [***] | 42586, 42587, 42588 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-22 | May-2019 | 1 | [***] | 42589 | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-22 | May-2019 | 1 | [***] | 42590 | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-22 | Aug-2019 | 2 | [***] | 42561, 42569 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-22 | Jan-2023 | 1 | [***] | 42591 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-22 | Feb-2023 | 1 | [***] | 42592 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-22 | Mar-2023 | 1 | [***] | 42595 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-22 | Apr-2023 | 1 | [***] | 42598 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-22 | May-2023 | 1 | [***] | 42600 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-22 | Jun-2023 | 1 | [***] | 42602 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-22 | Jul-2023 | 1 | [***] | 42603 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-22 | Aug-2023 | 1 | [***] | 42604 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-22 | Sep-2023 | 1 | [***] | 42609 | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-22 | Oct-2023 | 1 | [***] | 42614 | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-22 | Nov-2023 | 1 | [***] | 42613 | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-22 | Dec-2023 | 1 | [***] | 42616 | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-22 | Jan-2024 | 1 | [***] | 42618 | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-22 | Feb-2024 | 1 | [***] | 42620 | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-22 | Mar-2024 | 1 | [***] | 42621 | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-22 | Apr-2024 | 1 | [***] | 42623 | [***] |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 1

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Oct-22 | May-2024 | 1 | [***] | 42627 | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-22 | Jun-2024 | 1 | [***] | 42629 | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-22 | Jul-2024 | 1 | [***] | 42631 | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-22 | Aug-2024 | 1 | [***] | 42632 | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-22 | Sep-2024 | 1 | [***] | 42635 | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-22 | Oct-2024 | 1 | [***] | 42638 | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-22 | Nov-2024 | 1 | [***] | 42642 | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-2023 | Jul-21 | 2 | [***] | 42657, 42671 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2023 | Mar-22 | 2 | [***] | 42679, 42678 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2023 | Apr-22 | 1 | [***] | 42688 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2023 | Apr-22 | 2 | [***] | 42681, 42680 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2023 | May-22 | 1 | [***] | 42684 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2023 | May-22 | 2 | [***] | 42683, 42682 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2023 | Jun-22 | 1 | [***] | 42687 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
May-2023 | Jun-22 | 2 | [***] | 42686, 42685 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
May-2023 | Jul-22 | 1 | [***] | 42690 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jun-2023 | Jul-22 | 1 | [***] | 42689 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jun-2023 | Aug-22 | 1 | [***] | 42693 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jul-2023 | Aug-22 | 1 | [***] | 42695 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jul-2023 | Jan-23 | 1 | [***] | 42565 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Aug-2023 | Jan-23 | 1 | [***] | 42560 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Aug-2023 | Feb-23 | 2 | [***] | 42562, 42564 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Sep-2023 | Mar-23 | 1 | [***] | 42557 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Sep-2023 | Apr-23 | 1 | [***] | 42555 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Oct-2023 | May-23 | 2 | [***] | 42594, 42568 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Oct-2023 | Jun-23 | 1 | [***] | 42581 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Nov-2023 | Jul-23 | 2 | [***] | 42582, 42597 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Dec-2023 | Aug-23 | 1 | [***] | 42593 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Dec-2023 | Sep-23 | 1 | [***] | 42578 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jan-2024 | Sep-23 | 1 | [***] | 42601 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 2

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jan-2024 | Oct-23 | 1 | [***] | 42605 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2024 | Dec-23 | 1 | [***] | 42583 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2024 | Jan-24 | 2 | [***] | 42584, 42585 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2024 | Jan-24 | 1 | [***] | 42611 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2024 | Feb-24 | 2 | [***] | 42596, 42599 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2024 | Feb-24 | 1 | [***] | 42612 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2024 | Apr-24 | 2 | [***] | 42606, 42617 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
May-2024 | May-24 | 3 | [***] | 42608, 42619, 42622 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jun-2024 | Jun-24 | 1 | [***] | 42610 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jun-2024 | Aug-24 | 1 | [***] | 42626 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jul-2024 | Aug-24 | 1 | [***] | 42624 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jul-2024 | Sep-24 | 1 | [***] | 42630 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Aug-2024 | Oct-24 | 2 | [***] | 42625, 42636 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Aug-2024 | Nov-24 | 1 | [***] | 42639 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Sep-2024 | Dec-24 | 2 | [***] | 42640, 42628 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Oct-2024 | Feb-25 | 1 | [***] | 42643 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Oct-2024 | Mar-25 | 2 | [***] | 42645, 42644 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Nov-2024 | Apr-25 | 2 | [***] | 42659, 42660 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Dec-2024 | May-25 | 1 | [***] | 42663 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Dec-2024 | Jun-25 | 1 | [***] | 42667 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jan-2025 | Jul-25 | 1 | [***] | 42668 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Jan-2025 | Aug-25 | 1 | [***] | 42675 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2025 | Sep-25 | 2 | [***] | 42677, 42676 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Feb-2025 | Oct-25 | 1 | [***] | 42692 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2025 | Oct-25 | 1 | [***] | 42696 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Mar-2025 | Nov-25 | 2 | [***] | 42698, 42700 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2025 | Dec-25 | 2 | [***] | 42702, 42701 | [***] | ***737-8 Sub | [***] | [***] | [***] | [***] | [***]
Apr-2025 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2025 |  | 3 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2025 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 3

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jul-2025 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2025 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2025 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2025 |  | 3 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2025 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2025 |  | 3 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Mar-2026 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Apr-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2026 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2026 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2026 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Mar-2027 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Apr-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2027 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2027 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2027 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 4

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jan-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Mar-2028 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Apr-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2028 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2028 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2028 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-2029 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Mar-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Apr-2029 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jul-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2029 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2029 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2029 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jan-2030 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Feb-2030 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Mar-2030 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Apr-2030 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
May-2030 |  | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Jun-2030 |  | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 5

Table 1B To
Purchase Agreement No. PA-03729
Aircraft Delivery, Description, Price and Advance Payments
737-7 Aircraft

Delivery Date* | Original Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Manufacturer |  |  | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
Serial Number** | Escalation Factor | Note | At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Jul-2030 | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Aug-2030 | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Sep-2030 | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Oct-2030 | 2 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Nov-2030 | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]
Dec-2030 | 1 | [***] |  | [***] |  | [***] | [***] | [***] | [***] | [***]

| Total: | 200

* [***]
.
** Manufacturer Serial Numbers (MSN) are for reference only and are subject to change.
*** [***]
Notes:
(1) [***].

|  | SA-12
SWA-PA-03729 107953- 1F 116795- 1F | Boeing Proprietary | Page 6

AIRCRAFT CONFIGURATION FOR
REMARKET AIRCRAFT
BETWEEN
THE BOEING COMPANY
AND
SOUTHWEST AIRLINES CO.
EXHIBIT A-3 to PURCHASE AGREEMENT NUMBER PA-03729

Page 1
BOEING PROPRIETARY

Exhibit A-3
AIRCRAFT CONFIGURATION for Remarket aircraft
Dated March < >, 2021
relating to
BOEING MODEL 737-8 REMARKET AIRCRAFT

This Exhibit A-3 contains the As-Built Configuration for Initial Technical Acceptance of the Remarket Aircraft identified below, and will be amended by way of supplemental agreement, pursuant to the provisions of Letter Agreement SWA-PA-03729-LA-2100700, entitled “Remarket Aircraft Open Matters,” to describe the Delivery Configuration of the Remarket Aircraft, subsequent to Boeing and Customer finalizing the Delivery Configuration for the Remarket Aircraft.

EXHIBIT A-3
THE AS-BUILT CONFIGURATION FOR THE REMARKET AIRCRAFT IS UNDETERMINED AT THIS POINT IN TIME. ONCE THE AS-BUILT CONFIGURATION IS DETERMINED, A REVISION TO THIS EXHIBIT A-3 WILL BE INCORPORATED INTO THE PURCHASE AGREEMENT.

SWA-PA-03729 | SA-12
Page 2
BOEING PROPRIETARY

REMARKET AIRCRAFT TECHNICAL ACCEPTANCE AND DELIVERY REQUIREMENTS AND RESPONSIBILITIES
between
THE BOEING COMPANY
and
SOUTHWEST aIRLINES co.
Exhibit B-1 to Purchase Agreement
Number PA-03729

SWA-PA-03729 Exhibit B-1 |  | SA-12
|  | Page 1
| BOEING PROPRIETARY |

EXHIBIT B-1
REMARKET AIRCRAFT TECHNICAL ACCEPTANCE AND DELIVERY REQUIREMENTS AND RESPONSIBILITIES
relating to
Boeing Model 737-8 Remarket Aircraft

Both Boeing and Customer have certain documentation and approval responsibilities at various times during the construction and delivery cycle of the Remarket Aircraft that are critical to accomplishing final delivery of the Reconfigured Remarket Aircraft, and ensuring a positive experience for both parties. This Exhibit B-1 documents those responsibilities and indicates recommended completion deadlines for the actions to be accomplished.

EXHIBIT B-1
THE REMARKET AIRCRAFT TECHNICAL ACCEPTANCE AND
DELIVERY REQUIREMENTS AND RESPONSIBILITIES ARE UNDETERMINED AT THIS POINT IN TIME. ONCE THE REMARKET AIRCRAFT TECHNICAL ACCEPTANCE AND
DELIVERY REQUIREMENTS AND RESPONSIBILITIES ARE DETERMINED, A REVISION TO THIS EXHIBIT B-1 WILL BE INCORPORATED INTO THE PURCHASE AGREEMENT.

SWA-PA-03729 Exhibit B-1 |  | SA-12
|  | Page 2
| BOEING PROPRIETARY |

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

SWA-PA-03729-LA-1106471R2
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: Substitute Aircraft
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
2) Letter Agreement No. SWA-PA-03729-LA-1106469, [***]
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.
1.[***]
2.[***]

SWA-PA-03729 LA-1106471R2 |  | SA-12
Aircraft Model Substitution |  | Page 1
| BOEING PROPRIETARY |

3. [***]
4. [***]

SWA-PA-03729 LA-1106471R2 |  | SA-12
Aircraft Model Substitution |  | Page 2
| BOEING PROPRIETARY |

5. Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part.
6. Confidential Treatment.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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

SWA-PA-03729 LA-1106471R2 |  | SA-12
Aircraft Model Substitution |  | Page 3
| BOEING PROPRIETARY |

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J. May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24, 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729 LA-1106471R2 |  | SA-12
Aircraft Model Substitution |  | Page 4
| BOEING PROPRIETARY |

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

SWA-PA-03729-LA-1106473 R2
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-1106471R2 entitled “Substitute Aircraft” (Substitution Letter)
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.
1. [***]

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 1
BOEING PROPRIETARY

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 2
BOEING PROPRIETARY

2. [***]

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 3
BOEING PROPRIETARY

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 4
BOEING PROPRIETARY

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 5
BOEING PROPRIETARY

3. [***]
4. Assignment.
Unless otherwise noted herein, [***] described in this Letter Agreement are provided [***] to Customer and in consideration of Customer’s taking title to the Substitute Aircraft at time of delivery and becoming the operator of the Substitute Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing.
5. Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 6
BOEING PROPRIETARY

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact

ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729 LA-1106473R2 |  | SA-12
[***] |  | Page 7
BOEING PROPRIETARY

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

SWA-PA-03729-LA-1106474 R3
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: Option Aircraft
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 aircraft and Model 737-7 aircraft
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.
1.Right to Purchase Option Aircraft.
Subject to the terms and conditions contained in this Letter Agreement, in addition to the Aircraft described in Table 1 to the Purchase Agreement as of the date of execution of this Letter Agreement, Customer will have the option to purchase additional Boeing Model 737-8 aircraft as option aircraft (Option Aircraft).
2.Delivery.
The number of Option Aircraft and delivery dates are listed in the Attachment 1-A and 1-B (collectively Attachment 1) to this Letter Agreement. The Attachment 1-A Aircraft are the Original Option Aircraft (Original Option Aircraft) and the Attachment 1-B are the 2020 Option Aircraft (2020 Option Aircraft).
3.Configuration.
3.1 Subject to the provisions of Article 3.2, below, the configuration for the Option Aircraft will be the Detail Specification for Boeing Model 737-8 aircraft at the revision level in effect at the time of Definitive Agreement (as defined in Article 8). Such Detail Specification will be revised to include (i) changes applicable to the Detail Specification that are developed by Boeing between the Option Exercise Date (as defined below) and the signing of the Definitive Agreement, (ii) changes required to obtain required regulatory certificates, and (iii) other changes as mutually agreed.

SWA-PA-03729 LA-1106474R3 |  | SA-12
Option Aircraft |  | Page 1
BOEING PROPRIETARY

3.2 Boeing reserves the right to configure the Option Aircraft starting from a different configuration specification, provided that it can achieve the same configuration which would result pursuant to the provisions of Article 3.1.
4. [***]
5. [***]

SWA-PA-03729 LA-1106474R3 |  | SA-12
Option Aircraft |  | Page 2
BOEING PROPRIETARY

6. [***]
7. [***]
8. [***]
9. Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Option Aircraft and cannot be assigned in whole or in part.
10. Confidentiality.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally to other parties. Customer agrees

SWA-PA-03729 LA-1106474R3 |  | SA-12
Option Aircraft |  | Page 3
BOEING PROPRIETARY

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729 LA-1106474R3 |  | SA-12
Option Aircraft |  | Page 4
BOEING PROPRIETARY

Attachment 1-A To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Airframe Model/MTOW: 737-8 Engine Model/Thrust: CFMLEAP-1B28(1) | 181,200 pounds 28,800 pounds | Detail Specification: Airframe Price Base Year/Escalation Formula: | D019A008-S (5/1/2017) Jul-11 | ECI-MFG/CPI
Airframe Price: | [***] | Engine Price Base Year/Escalation Formula: | N/A | N/A
Optional Features: | [***] |  |  |
Sub-Total of Airframe and Features: | [***] | Airframe Escalation Data: |  |
Engine Price (Per Aircraft): | [***] | Base Year Index (ECI): | [***] |
Aircraft Basic Price (Excluding BFE/SPE): | [***] | Base Year Index (CPI): | [***] |
Buyer Furnished Equipment (BFE) Estimate: | [***] |  |  |
Seller Purchased Equipment (SPE) Estimate: | [***] |  |  |

Non-Refundable Deposit/Aircraft at Def Agreement: [***]

Delivery Date | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date Deadline | Note | MSN | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Mar-2022 | 5 | [***] | [***] | Remarket Aircraft** | 67206, 67205, 67207, 67208, 67209 | [***] | [***] | [***] | [***] | [***]
Apr-2022 | 5 | [***] | [***] | Remarket Aircraft** | 67210, 67211, 67212, 67213, 67214 | [***] | [***] | [***] | [***] | [***]
May-2022 | 1 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
May-2022 | 4 | [***] | [***] | Remarket Aircraft** | 67216, 67215, 67218, 67217 | [***] | [***] | [***] | [***] | [***]
Jun-2022 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Jul-2022 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Aug-2022 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Sep-2022 | 1 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Sep-2022 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Oct-2022 | 1 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Oct-2022 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Nov-2022 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Nov-2022 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Dec-2022 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Dec-2022 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Jan-2023 | 1 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2023 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Mar-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]

SWA-PA-03729-LA-1106474 107813 116801- 1F.txt | Boeing Proprietary | Page 1

Attachment 1-A To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Delivery Date | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date Deadline | Note | MSN | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Mar-2023 | 1 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
May-2023 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Jun-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Jul-2023 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Jul-2023 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Aug-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Sep-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Sep-2023 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Oct-2023 | 3 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Nov-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Nov-2023 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Dec-2023 | 2 | [***] | [***] | Remarket Aircraft** |  | [***] | [***] | [***] | [***] | [***]
Dec-2023 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2024 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2024 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2024 | 4 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2024 | 4 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
May-2024 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jun-2024 | 2 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jun-2024 | 1 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Jan-2025 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Feb-2025 | 3 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Mar-2025 | 4 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
Apr-2025 | 4 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
May-2025 | 1 | [***] | [***] |  |  | [***] | [***] | [***] | [***] | [***]
May-2025 | 3 | [***] | [***] | Previously Earned | *** | [***] | [***] | [***] | [***] | [***]
Jun-2025 | 2 | [***] | [***] | Previously Earned | *** | [***] | [***] | [***] | [***] | [***]

Total: | 120

*[***]

SWA-PA-03729-LA-1106474 107813 116801- 1F.txt | Boeing Proprietary | Page 2

Attachment 1-A To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Delivery Date | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date Deadline | Note | MSN | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]

** [***]
***[***]
Note:
(1) [***]

SWA-PA-03729-LA-1106474 107813 116801- 1F.txt | Boeing Proprietary | Page 3

Attachment 1-B To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Airframe Model/MTOW: | 737-8 | 181,200 pounds |  | Detail Specification: | D019A008-S (5/1/2017)
Engine Mode/Thrust: | CFMLEAP-1B28(1) | 28,800 pounds |  | Airframe Price Base Year/Escalation Formula: | Jul-11 | Non-Standard
Airframe Price: |  | [***] |  | Engine Price Base Year/Escalation Formula: | Jul-11 | Non-Standard
Optional Features: |  | [***] |  |  |  |
Sub-Total of Airframe and Features: |  | [***] |  | Airframe Escalation Data: |  |
Engine Price (Per Aircraft): |  | [***] |  | Base Year Index (ECI): |  |
Aircraft Basic Price (Excluding BFE/SPE): |  | [***] |  | Base Year Index (CPI): |  |
Buyer Furnished Equipment (BFE) Estimate: |  | [***] |  |  |  |
Seller Purchased Equipment (SPE) Estimate: |  | [***] |  |  |  |
Deposit per Aircraft: |  | [***] |  |  |  |

Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date | Escalation | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Deadline | Factor
Jul-2024 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2024 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2024 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2024 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Nov-2024 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Dec-2024 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jun-2025 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jul-2025 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2025 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2025 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2025 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Nov-2025 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Dec-2025 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]

SWA-PA-03729-LA-116800- 1F.txt | Boeing Proprietary | Page 1

Attachment 1-B To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date | Escalation | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Deadline | Factor
Jan-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Feb-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Mar-2026 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Apr-2026 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
May-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jun-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jul-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2026 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2026 | 4 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Nov-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Dec-2026 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jan-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Feb-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Mar-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Apr-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
May-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jun-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jul-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Nov-2027 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Dec-2027 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jan-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]

SWA-PA-03729-LA-116800- 1F.txt | Boeing Proprietary | Page 2

Attachment 1-B To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date | Escalation | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Deadline | Factor
Feb-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Mar-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Apr-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
May-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jun-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jul-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Nov-2028 | 3 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Dec-2028 | 2 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jan-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Feb-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Mar-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Apr-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
May-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jun-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Jul-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Aug-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Sep-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]
Oct-2029 | 1 | [***] | [***] | [***] | [***] | [***] | [***] | [***] | [***]

Total: | 150

* [***]

SWA-PA-03729-LA-116800- 1F.txt | Boeing Proprietary | Page 3

Attachment 1-B To
Letter Agreement No. 1106474
Aircraft Delivery, Description, Price and Advance Payments

Delivery Date* | Number of Aircraft | Escalation Factor (Airframe) | Option Exercise Date | Escalation | Escalation Estimate Adv Payment Base Price Per A/P | Advance Payment Per Aircraft (Amts. Due/Mos. Prior to Delivery):
At Signing [***] | 24 Mos. [***] | 21/18/12/9/6 Mos. [***] | Total [***]
Deadline | Factor

Note:
(1) [***]

SWA-PA-03729-LA-116800- 1F.txt | Boeing Proprietary | Page 4

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

SWA-PA-03729-LA-1106475 R4
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-1106474R2 entitled “Option Aircraft” (Option Aircraft Letter Agreement)
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.
1.[***]

SWA-PA-03729-LA-1106475R4 | SA-12
[***] | Page 2
BOEING PROPRIETARY

SWA-PA-03729-LA-1106475R4 | SA-12
[***] | Page 3
BOEING PROPRIETARY

2.[***]
3.Assignment.
Unless otherwise noted herein, [***] described in this Letter Agreement are provided [***] to Customer and in consideration of Customer’s taking title to the Option Aircraft at time of delivery and becoming the operator of the Option Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing.

SWA-PA-03729-LA-1106475R4 | SA-12
[***] | Page 4
BOEING PROPRIETARY

4.Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

SWA-PA-03729-LA-1106475R4 | SA-12
[***] | Page 5
BOEING PROPRIETARY

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-1106475R4 | SA-12
[***] | Page 6
BOEING PROPRIETARY

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

SWA-PA-03729-LA-1106484R2
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
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.
1.Defined Terms: The following capitalized terms have the following meaning:
1.1 [***]
1.2 [***]
1.3 Program Aircraft means each firm and exercised Option Aircraft specified in Table 1 of the Purchase Agreement as of the date of this Letter that are scheduled for delivery prior to 2024.
2.[***]
3.[***]

SWA-PA-03729-LA-1106484R3 | SA-12
[***] | Page 1
BOEING PROPRIETARY

4.[***]

SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 2
BOEING PROPRIETARY

5.[***]
6.[***]
7.Assignment. Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part.
8.Confidentiality. Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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

SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 3
BOEING PROPRIETARY

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 25 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 4
BOEING PROPRIETARY

ATTACHMENT A
[***]

[***] | [***] | [***]
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[***] | [***] | [***]
[***] | [***] | [***]
[***] | [***] | [***]
[***] | [***] | [***]
[***] | [***] | [***]

SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 5

BOEING PROPRIETARY

| ATTACHMENT B [***]

[***] | [***] | [***] | [***]
[***] | [***] | [***] | [***]
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[***] | [***] | [***] | [***]
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[***] | [***] | [***] | [***]
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SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 6
BOEING PROPRIETARY

| ATTACHMENT B [***]

[***] | [***] | [***] | [***]
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SWA-PA-03729-LA-1106484R2 | SA-12
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| ATTACHMENT B [***]

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SWA-PA-03729-LA-1106484R2 | SA-12
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| ATTACHMENT B [***]

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SWA-PA-03729-LA-1106484R2 | SA-12
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| ATTACHMENT B [***]

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SWA-PA-03729-LA-1106484R2 | SA-12
[***] | Page 10
BOEING PROPRIETARY

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

SWA-PA-03729-LA-1301170 R3
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft
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.
1.[***]

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 1

BOEING PROPRIETARY

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 2
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2.[***]
3.Assignment.
Unless otherwise noted herein, [***] described in this Letter Agreement are provided [***] to Customer and in consideration of Customer’s taking title to the 737-7 Aircraft at time of delivery and becoming the operator of the 737-7 Aircraft. This Letter

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 3
BOEING PROPRIETARY

Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing.
4.Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 4
BOEING PROPRIETARY

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 5
BOEING PROPRIETARY

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

SWA-PA-03729-LA-1602486R1
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft
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.
[***]
1.Definitions.
In this Letter Agreement, the following terms have meanings as follows:
Aircraft refers to any of the Boeing Model 737-8 and 737-7 aircraft described in Table 1A and Table 1B, respectively, of the Purchase Agreement.
[***]
[***]
Effective Date means the date on which SA-12 is mutually executed by the parties.
[***]
2. [***]

SWA-PA-03729-LA-1602486R1 | SA-12
[***] | Page 1

BOEING PROPRIETARY

3. [***]
4. [***]

SWA-PA-03729-LA-1301170R3 | SA-12
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BOEING PROPRIETARY

5. [***]
6. [***]
7. [***]
8. [***]
9. [***]
10. Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or in part.

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 3
BOEING PROPRIETARY

11. Confidentiality.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 4
BOEING PROPRIETARY

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact

ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-1301170R3 | SA-12
[***] | Page 5
BOEING PROPRIETARY

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

SWA-PA-03729-LA-2100594
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: 737-8 Remarket Aircraft
Reference: a) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to models 737-8 and 737-7 aircraft (Aircraft); and
b) Letter Agreement No. SWA-PA-03729-LA-2100700 entitled “Remarket Aircraft – Open Configuration Matters” (Remarket Aircraft Open Configuration Matters) to the Purchase Agreement
This letter agreement (Letter Agreement) amends and supplements the Purchase Agreement and governs Customer’s purchase of sixty (60) remarket Boeing model 737-8 Aircraft with CFMI engines (Remarket Aircraft), under the terms and conditions described in this Letter Agreement and the Purchase Agreement. All capitalized terms which are not otherwise defined herein shall have the definitions specified in the Purchase Agreement and other letter agreements specifically addressing the Remarket Aircraft.
This Letter Agreement incorporates in the Purchase Agreement those terms applicable only to the Remarket Aircraft. Except as expressly amended by the terms of this Letter Agreement, Remarket Aircraft are in all other respects “Aircraft” under the terms of the Purchase Agreement.
[***]
[***]

SA-12
Page 1
BOEING PROPRIETARY

[***]
1. [***]
2. [***]

SWA-PA-03729-LA-2100594 | SA-12
| Page 2
BOEING PROPRIETARY |

`
3. Miscellaneous.
3.1 [***]
3.2 [***]
3.3 [***]
3.4 [***]
4. [***]

SWA-PA-03729-LA-2100594 | SA-12
| Page 3
BOEING PROPRIETARY |

5. Assignment.
Notwithstanding any other provisions of the Purchase Agreement to the contrary, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Remarket Aircraft and the Replacement Aircraft and cannot be assigned in whole or in part.

SWA-PA-03729-LA-2100594 | SA-12
| Page 4
BOEING PROPRIETARY |

6. Confidential Treatment.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential 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 Remarket 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.

SWA-PA-03729-LA-2100594 | SA-12
| Page 5
BOEING PROPRIETARY |

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24, 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-2100594 | SA-12
| Page 6
BOEING PROPRIETARY |

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

SWA-PA-03729-LA-2100700
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: Remarket Aircraft – Open Matters
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
2) Letter Agreement No. SWA-PA-03729-LA-1106474R3 entitled “Option Aircraft” (Option Aircraft Letter Agreement) to the Purchase Agreement
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.
1. Commitment of the Parties. Customer and Boeing agree that there are various details associated with the Remarket Aircraft in Attachment 1-A to the Option Aircraft Letter Agreement that have yet to be discussed and finalized between the Parties.
1.1 [***]
1.2 [***]
2. [***]

| SA-12
| Page 1
BOEING PROPRIETARY

3. [***]
4. [***]
5. Confidential Treatment.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential 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 Remarket 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

SWA-PA-03729-LA-2100700 | SA-12
Remarket Aircraft – Open Matters | Page 2
BOEING PROPRIETARY

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24, 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-2100700 | SA-12
Remarket Aircraft – Open Matters | Page 3
BOEING PROPRIETARY

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

SWA-PA-03729-LA-2100811
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-1106474R3 entitled “Option Aircraft” (Option Aircraft Letter Agreement)
3) Letter Agreement SWA-PA-03729-LA-1106475R4 entitled [***]
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.
[***]
[***]
[***]

| SA-12
| Page 1
BOEING PROPRIETARY

1.[***]

SWA-PA-03729-LA-2100811 | SA-12
[***] | Page 2
BOEING PROPRIETARY

2.[***]

SWA-PA-03729-LA-2100811 | SA-12
[***] | Page 3
BOEING PROPRIETARY

3.Confidentiality.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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)

SWA-PA-03729-LA-2100811 | SA-12
[***] | Page 4
BOEING PROPRIETARY

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.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-2100811 | SA-12
[***] | Page 5
BOEING PROPRIETARY

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

SWA-PA-03729-LA-2100812
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-1106474R3 entitled “Option Aircraft” (Option Aircraft Letter Agreement)
3) Letter Agreement SWA-PA-03729-LA-1106475R4 entitled [***]
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.
[***]
1.[***]

|  | SA-12
|  | Page 1
| BOEING PROPRIETARY |

SWA-PA-03729-LA-2100812 | SA-12
[***] | Page 2
BOEING PROPRIETARY |

2.[***]

SWA-PA-03729-LA-2100812 | SA-12
[***] | Page 3
BOEING PROPRIETARY |

3.[***]

SWA-PA-03729-LA-2100812 | SA-12
[***] | Page 4
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4.Confidentiality.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

SWA-PA-03729-LA-2100812 | SA-12
[***] | Page 5
BOEING PROPRIETARY |

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-2100812 | SA-12
[***] | Page 6
BOEING PROPRIETARY |

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

SWA-PA-03729-LA-2100813
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 aircraft and Model 737-7 aircraft
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.
[***]
1.[***]
2.Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and leased aircraft and cannot be assigned in whole or in part.
3.Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally to other parties. Customer agrees to limit the disclosure of the contents of this Letter Agreement to (a) its directors and

|  | SA-12
|  | Page 1
| BOEING PROPRIETARY |

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.

SWA-PA-03729-LA-2100813 | SA-12
[***] | Page 2
BOEING PROPRIETARY |

Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

SWA-PA-03729-LA-2100813 | SA-12
[***] | Page 3
BOEING PROPRIETARY |

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

SWA-PA-03729-LA-2100814
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
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.
1.Definitions.
[***]
[***]
[***]
[***]
Option Aircraft will have the meaning specified in Letter Agreement Number LA-1106474R3 relating to Option Aircraft.
Original Option Aircraft will have the meaning specified in Letter Agreement Number LA-1106474R3 relating to Option Aircraft.
2020 Option Aircraft will have the meaning specified in Letter Agreement Number LA-1106474R3 relating to Option Aircraft.
Program Aircraft means (i) each firm and exercised Option Aircraft in Table 1 of the Purchase Agreement as of the date of this Letter Agreement that are scheduled

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for delivery after January 1, 2024, (ii) each of the (100) 737-7 firm Aircraft, (iii) each exercised Original Option Aircraft, and (iv) each exercised 2020 Option Aircraft.
[***]
2.Applicability.
2.1 [***]
2.2 [***]
3.[***]
4.[***]
5.[***]

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6.[***]
7.Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer becoming the operator of the Aircraft and cannot be assigned, in whole or in part, without the prior written consent of Boeing.
8.Confidentiality.
The information contained herein represents confidential business information and has value precisely because it is not available generally or to other parties. Customer will limit the disclosure of its contents to employees of Customer with a need to know the contents for purposes of helping Customer perform its obligations under the Purchase Agreement and who understand they are not to disclose its contents to any other person or entity without the prior written consent of Boeing.

ACCEPTED AND AGREED TO this |  |  |
Date: | March 24, 2021 |  |  |
southwest airlines co. |  |  | THE BOEING COMPANY
By: | /s/ Michael Van de Ven |  | By: | /s/ Carson J May
Name: | Michael Van de Ven |  | Name: | Carson J May
Title: | Chief Operating Officer |  | Title: | Attorney-In-Fact

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ATTACHMENT A
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ATTACHMENT B-1 : [***]
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| The Boeing Company P.O. Box 3707 Seattle, WA 98124 2207

SWA-PA-03729-LA-2100819
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
2) Letter Agreement No. SWA-PA-03729-LA-1301170R3, [***]
3) Letter Agreement No. SWA-PA-03729-LA-2100812, [***]
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.
1.[***]

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2.Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part.
3.Confidential Treatment.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

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Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

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SWA-PA-03729-LA-2100825
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and 737-7 aircraft (Aircraft)
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.
1.[***]

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2.Assignment.
Notwithstanding any other provisions of the Purchase Agreement, the rights and obligations described in this Letter Agreement are provided to Customer in consideration of Customer’s becoming the operator of the Aircraft and cannot be assigned in whole or, in part.
3.Confidential Treatment.
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

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Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chiefs Operating Officer

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

SWA-PA-03729-LA-2100841
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
Reference: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-2100594 entitled “737-8 Remarket Aircraft” (Remarket Aircraft Letter Agreement)
3) Letter Agreement SWA-PA-03729-LA-1106474R3 entitled “Option Aircraft”
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.
1.[***]

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2.[***]

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3.[***]
4.Assignment.
Unless otherwise noted herein, [***] described in this Letter Agreement are provided [***] to Customer and in consideration of Customer’s taking title to the 737-8 Aircraft at time of delivery and becoming the operator of such 737-8 Aircraft. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing.
5.Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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

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regulations. Customer shall be fully responsible to Boeing for compliance with such obligations.
Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact
ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

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

SWA-PA-03729-LA-2100984
Southwest Airlines Co.
2702 Love Field Drive
P.O. Box 36611
Dallas, Texas 75235-1611
Subject: [***]
References: 1) Purchase Agreement No. PA-03729 (Purchase Agreement) between The Boeing Company (Boeing) and Southwest Airlines Co. (Customer) relating to Model 737-8 and Model 737-7 aircraft
2) Letter Agreement SWA-PA-03729-LA-1106471 entitled “Substitute Aircraft” (Substitution Letter)
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.
1.[***]

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2.[***].
3.Assignment.
Unless otherwise noted herein, [***] described in this Letter Agreement are provided [***] to Customer and in consideration of [***]. This Letter Agreement cannot be assigned, in whole or in part, without the prior written consent of Boeing.
4.Confidentiality
Customer understands that certain commercial and financial information contained in this Letter Agreement is considered by Boeing as confidential and has value precisely because it is not available generally 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.

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Very truly yours,

THE BOEING COMPANY
By | /s/ Carson J May
Name | Carson J May
Its | Attorney-In-Fact

ACCEPTED AND AGREED TO this
Date: | March 24 , 2021
SOUTHWEST AIRLINES CO.
By | /s/ Michael Van de Ven
Name | Michael Van de Ven
Its | Chief Operating Officer

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