92 added · 78 removed between the two most recent 10-Ks. The risks a company starts — or stops — disclosing are often the story.
Newly disclosed
In 2025, we launched the beta version of Delta Concierge, an AI-powered virtual assistant within the Delta app, which aims to deliver real-time travel support for our customers.
For example, we own a 2% equity interest in China Eastern, with whom we have a strategic joint marketing and commercial cooperation arrangement covering traffic flows between China and the U.S.
In our operations, we are beginning to adopt artificial intelligence ("AI") models to help us route and distribute bags with short timeframes to make connections in our hubs and make gating decisions that are aimed at keeping flights on time.
In addition, if we are unable to develop or deploy new technologies, including AI‑enabled capabilities, as quickly or effectively as our competitors, or if our investments do not deliver expected benefits, our ability to compete and meet customer expectations could be adversely affected.
AI‑enabled tools may also be used to generate, manipulate or amplify inaccurate, misleading or fabricated content, including social media posts, images or videos, which may be difficult to promptly identify or correct.
On September 15, 2025, the DOT issued a final order terminating the antitrust immunity for our joint cooperation agreement with Aeroméxico and directed us and Aeroméxico to wind down certain joint operations that were covered by the immunity by January 1, 2026.
How We Fly In 2025, we met and exceeded our near-term operational fuel efficiency target of 1% fuel burn savings, by delivering over 55 million gallons of jet fuel savings from operational improvements as compared to 2019 and relative to what we would have used if we had not undertaken any fuel efficiency efforts, not including fleet renewal.
Domestic airline employees represented by collective bargaining agreements by group Employee Group Approximate Number of Employees Represented Union Date on which Collective Bargaining Agreement Becomes Amendable Delta Pilots 17,260 ALPA December 31, 2026 Delta Flight Superintendents (Dispatchers) 530 PAFCA August 1, 2030 Endeavor Pilots 1,770 ALPA January 1, 2029 Endeavor Flight Attendants 1,910 AFA March 31, 2027 In addition to the domestic airline employee groups discussed above, approximately 200 refinery employees of Monroe are represented by the United Steel Workers under an agreement that expires on February 28, 2026.
On September 15, 2025, the DOT issued a final order terminating the antitrust immunity for our joint cooperation agreement with Aeroméxico and directed us and Aeroméxico to wind down certain joint operations that were covered by the immunity by January 1, 2026.
New and emerging technologies, including AI‑based tools and services, may not perform as intended, may be difficult to implement, integrate or scale, or may require ongoing training, monitoring and refinement.
The Dutch government has issued a revised plan, which is the subject of renewed litigation brought by airlines, including Delta and KLM, and by groups representing residents around Schiphol Airport.
Significant damage to our reputation and brand could have a material adverse effect on our business and financial results, including as a result of litigation related to any of these matters.
No longer disclosed
For example, the DOT's approval of and antitrust immunity grant for our joint cooperation agreement with Aeroméxico is subject to a pending renewal application with the DOT, which was tentatively dismissed pursuant to an Order to Show Cause issued by the DOT on January 26, 2024.
In recognition of our unwavering commitment to operational performance, we were honored for the fourth consecutive year with the Cirium Platinum Award for global operational excellence in January 2025 and named the most on-time airline in North America.
The grant of antitrust immunity for our joint cooperation agreement with Aeroméxico is subject to a pending renewal application with the DOT, which was tentatively dismissed pursuant to an Order to Show Cause issued by the DOT on January 26, 2024.
Following the installation of split-scimitar winglets on our Boeing 737-900ER fleet in 2021, we expect to complete similar modifications on the Boeing 737-800 fleet by the end of 2025, an enhancement expected to drive over three million gallons of fuel savings annually.
Cumulatively, fleet renewal and optimization efforts have led to a 6.6% improvement in fleet-wide fuel efficiency since 2019. • Pursuing future aviation technologies : Our sustainability strategy aims to introduce revolutionary aircraft into our fleet.
In 2024, these fuel efficiency efforts allowed us to save approximately 44 million gallons of jet fuel in comparison to fuel consumption in 2019, based on our projected fuel usage had we not undertaken these initiatives. • Plastic waste reduction : In late 2024, we began using a new paper cup on board international flights with plans to expand use across all domestic flights in the first half of 2025.
In 2024, we used over 14 million gallons of SAF onboard our aircraft, a small fraction of our overall fuel consumption but more than four times our 2023 SAF utilization. • Building coalitions for the future : We are a founding member of the Minnesota SAF Hub, a first-of-its-kind partnership among corporations seeking to collaborate on scaling SAF production.
Our work with the Minnesota SAF Hub reached a key milestone in 2024, announcing the development of the first SAF blending facility in Minnesota, a collaboration between Delta and Flint Hills Resources, which is expected to blend up to 30 million gallons of SAF annually once fully operational.
We leverage business insights, strengthen employee satisfaction and offer educational and development opportunities to employees through our four employee engagement groups and our twelve employee resource groups, which we refer to as business resource groups, totaling membership of more than 40,000 as of December 31, 2024.
Domestic airline employees represented by collective bargaining agreements by group Employee Group Approximate Number of Employees Represented Union Date on which Collective Bargaining Agreement Becomes Amendable Delta Pilots 17,380 ALPA December 31, 2026 Delta Flight Superintendents (Dispatchers) (1) 500 PAFCA November 1, 2024 Endeavor Pilots 1,540 ALPA January 1, 2029 Endeavor Flight Attendants 1,700 AFA March 31, 2027 (1) We are in discussions with representatives of PAFCA regarding terms of the collective bargaining agreement that became amendable on November 1, 2024.
In addition to the domestic airline employee groups discussed above, approximately 200 refinery employees of our wholly owned subsidiary, Monroe Energy, LLC ("Monroe") are represented by the United Steel Workers under an agreement that expires on February 28, 2026.
The Wall Street Journal named us the top airline of 2024 among the nine major U.S. airlines in its annual airline scorecard for the fourth consecutive year, leading the industry in on-time arrivals and fewest involuntary denied boardings.