United, American and Delta mainline fleet sizes and aircraft types in October 2026
Written by AI from 8 reports listed below. Not checked by a person before publication. How we use AI
United Airlines leads the three U.S. legacy carriers with the largest mainline fleet, while each airline operates a distinct mix of aircraft types and variants.
United Airlines had 1,147 aircraft in its mainline fleet as of October 2026, the largest among the three legacy carriers. American Airlines reported 1,037 aircraft, and Delta Air Lines reported 1,006 aircraft in their mainline fleets at the same time. American Airlines operates four aircraft types: Airbus A320, Boeing 737, 777 and 787. Delta Air Lines operates eight types: Airbus A220, A320, A330, A350, Boeing 717, 737, 757 and 767. United Airlines operates six types: Airbus A320, Boeing 737, 757, 767, 777 and 787.
United Airlines flies 20 aircraft variants, Delta Air Lines flies 17 variants, and American Airlines flies 11 variants.
Analysed 8 reports from 8 publishers
Used in this story
- simpleflying.com
- santafenewmexican.com
- balticbusinessnews.com
- firstalert4.com
- dominicantoday.com
- thepointsguy.com
- fool.com
- dailypolitical.com
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