About This Report

This 2024 Delta Difference Report provides information on issues of interest to many of our key stakeholders, including Delta’s environmental, social and governance performance from January 1 to December 31, 2024. As many of our efforts extend beyond this timeframe, progress made during the first quarter of 2025 on long-term strategies and initiatives is included in this report as well. All references to “Delta,” “we,” “us” and “ours” are references to Delta Air Lines, Inc.

This report aligns with the reporting standards of the Sustainability Accounting Standards Board (SASB) and the Task Force on Climate-related Financial Disclosures (TCFD).

Our report reflects information regarding our airline operations, which is our core business. Monroe Energy, LLC (Monroe) is a wholly owned subsidiary of ours that operates the Trainer Refinery and related pipelines and terminal assets that supply jet fuel to our airline operations in the Northeastern United States. Monroe is operated separately, and, as such, information about Monroe is not reflected in this report. Consistent with the GHG Protocol, this report includes greenhouse gas (GHG) emissions from business activities under Delta’s operational control.¹ Monroe files GHG emissions reports annually with the U.S. Environmental Protection Agency, which are publicly available. The publicly available Monroe GHG emissions report can be viewed hereopens in a new window. We discuss Delta’s climate lobbying activities, including those by or on behalf of Monroe, in the Environment section of this report.

Reporting Priorities

At Delta, we are committed to transparently communicating how we identify, prioritize and approach the topics that are most relevant to our business, customers, employees and investors. We use a range of formal and informal engagement methods, including materiality analyses, ongoing dialogue with key stakeholders and our Enterprise Risk Management process. We use the findings from our engagement to inform what we disclose publicly about our short-, medium- and long-term environmental sustainability, social and governance strategies and milestones.

We continue to refine our approach in alignment with evolving best practices, voluntary guidance and the regulatory landscape. In 2023, we updated our materiality assessment to reflect changes in our understanding of the relevant topics that represent key impacts and evolving stakeholder priorities. That assessment was based on scientific findings, business and policy trends, dialogues with internal and external stakeholders, employee and customer surveys and data on potential financial impacts.

We used these inputs to identify the most relevant topics, including from an environmental, social and governance perspective, for our company and stakeholders. This assessment process, often referred to as a materiality assessment, relies on a different standard than that used in our financial disclosures and is distinct from the concept of materiality as defined under the rules and regulations of the U.S. Securities and Exchange Commission (SEC) and related case law.

As a result, the information described as material for the purposes of this report — such as our strategies and milestones — may not be material for other purposes, including in connection with our SEC filings.

The outcomes of our 2023 assessment are listed below.

1. The GHG Protocol establishes comprehensive global standardized frameworks to measure and manage GHG emissions from private and public-sector operations, value chains and mitigation actions.