SOUTHWEST AIRLINES CO

2. NEW ACCOUNTING PRONOUNCEMENTS

On May 19, 2026, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2026‑02, Environmental Credits and Environmental Credit Obligations (Topic 818), which establishes a new accounting model for environmental credits and related obligations. ASU 2026-02 provides guidance on the recognition, measurement, presentation, and disclosure of environmental credits, as well as obligations that may be settled using such credits. Under ASU 2026-02, environmental credits are recognized as assets when it is probable they will be used to satisfy a compliance obligation, transferred, or otherwise utilized in a qualifying manner. The accounting for these credits, including subsequent measurement, depends on whether they are expected to be used for compliance or noncompliance purposes. ASU 2026-02 also requires entities to recognize environmental credit obligations as activities occur that give rise to a regulatory requirement and introduces a measurement approach that is generally linked to the cost basis of credits expected to be used to settle such obligations. This standard is effective for public business entities for annual reporting periods beginning after December 15, 2027, including interim periods within those annual periods, with early adoption permitted. The Company is evaluating this new standard, but does not expect it to have a significant impact on its financial statement presentation or results.

On September 18, 2025, the FASB issued ASU 2025-06, Accounting for and Disclosure of Software Costs. The new standard modernizes the guidance to reflect the software development approaches currently being used by removing all references to "development stages" from ASC 350-40 Intangibles—Goodwill and Other - Internal-Use Software. Under ASU 2025-06, only the following criteria in ASC 350-40-25-12(b) and (c) must be met for entities to begin capitalizing software costs: (i) management, with the relevant authority, implicitly or explicitly authorizes and commits to funding a computer software project and (ii) it is probable that the project will be completed and the software will be used to perform the function intended (referred to as the "probable-to-complete recognition threshold"). This standard is effective for all entities for annual reporting periods beginning after December 15, 2027, and interim reporting periods within those annual reporting periods, with early adoption permitted. Entities

may apply the guidance prospectively, retrospectively, or via a modified prospective transition method. The Company is evaluating this new standard, but does not expect it to have a significant impact on its financial statement presentation or results.

On July 30, 2025, the FASB issued ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. This standard includes the option for entities to elect a practical expedient that assumes current conditions as of the balance sheet date do not change for the remaining life of the asset as a part of estimating expected credit losses. The Company has elected this practical expedient as of first quarter 2026, and there was no significant impact on its financial statement presentation or disclosures.

On November 4, 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. This standard responds to investor input by requiring public companies to disclose, in interim and annual reporting periods, additional information about certain expenses in the notes to the financial statements. This standard does not change the presentation of expense information or expense captions reported on the face of the income statement. This standard is effective for all entities that are subject to Subtopic 220-40, for annual periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027, but early adoption is permitted. The Company is evaluating this new standard, and may be required to include certain additional disclosures.