{{As of|2025|10|}}, the ”’Delta Air Lines fleet”’ consists of 986 mainline aircraft, making it the third largest commercial [[List of airlines by fleet size|airline fleet]] in the world.<ref>{{cite web | title=Corporate Stats and Facts | Delta News Hub | url=https://news.delta.com/corporate-stats-and-facts }}</ref> Prior to its 2008 merger with [[Northwest Airlines]], Delta mostly operated aircraft built in the United States. The merger introduced Airbus models, now the majority, into Delta’s fleet. Historically, Delta has favored used and older-generation aircraft to lower acquisition costs. Its in-house [[Maintenance, Repair and Overhaul|MRO]] division, [[Delta TechOps]], plays a key role in efficiently managing the complexity of this diverse fleet, while also generating revenue servicing aircraft and engines for other airlines. Delta operates the world’s largest passenger subfleets of [[Airbus A220]], [[Boeing 717]], [[Boeing 757]], [[Boeing 767]], and [[Airbus A330]] aircraft.<ref>{{Cite web |date=2024-04-03 |title=Orders and Deliveries {{!}} Airbus |url=https://www.airbus.com/en/products-services/commercial-aircraft/orders-and-deliveries |access-date=2025-05-13 |website=www.airbus.com |language=en}}</ref><ref>{{cite web | title=The World’s Largest Fleets of Passenger Boeing 757s in 2024 | date=March 11, 2024 | url=https://www.airportspotting.com/the-worlds-largest-fleets-of-passenger-boeing-757s-in-2024/ }}</ref><ref>{{cite web | title=Which Airlines Have the Largest 767 Fleets in 2025? | date=February 17, 2025 | url=https://www.airportspotting.com/which-airlines-have-the-largest-767-fleets-in-2025/ }}</ref> Wide-body aircraft including the Airbus A330, [[Airbus A350]], and Boeing 767, are deployed on long-haul routes to Europe, Asia, Africa, Oceania, and South America. {{As of|2024|12|}}, Delta’s average fleet age is 14.9 years.<ref name=10k/>
{{As of|2025|10|}}, the ”’Delta Air Lines fleet”’ consists of 986 mainline aircraft, making it the third largest commercial [[List of airlines by fleet size|airline fleet]] in the world.<ref>{{cite web | title=Corporate Stats and Facts | Delta News Hub | url=https://news.delta.com/corporate-stats-and-facts }}</ref> Prior to its 2008 merger with [[Northwest Airlines]], Delta mostly operated aircraft built in the United States. The merger introduced Airbus models, now the majority, into Delta’s fleet. Historically, Delta has favored used and older-generation aircraft to lower acquisition costs. Its in-house [[Maintenance, Repair and Overhaul|MRO]] division, [[Delta TechOps]], plays a key role in efficiently managing the complexity of this diverse fleet, while also generating revenue servicing aircraft and engines for other airlines. Delta operates the world’s largest passenger subfleets of [[Airbus A220]], [[Boeing 717]], [[Boeing 757]], [[Boeing 767]], and [[Airbus A330]] aircraft.<ref>{{Cite web |date=2024-04-03 |title=Orders and Deliveries {{!}} Airbus |url=https://www.airbus.com/en/products-services/commercial-aircraft/orders-and-deliveries |access-date=2025-05-13 |website=www.airbus.com |language=en}}</ref> Wide-body aircraft including the Airbus A330, [[Airbus A350]], and Boeing 767, are deployed on long-haul routes to Europe, Asia, Africa, Oceania, and South America. {{As of|2024|12|}}, Delta’s average fleet age is 14.9 years.<ref name=10k/>
