United Airlines operates the world's largest fleet with 1,112 aircraft, leading three American carriers that each fly more than a thousand jets.
Quick answer: 1. United Airlines, 2. American Airlines, 3. Delta Air Lines, 4. China Southern Airlines, 5. Southwest Airlines, 6. China Eastern Airlines, 7. Ryanair, 8. SkyWest Airlines, 9. Turkish Airlines, 10. Air China.
Fleet size is the bluntest measure of an airline's scale: how many aircraft it actually operates. It tracks a carrier's network reach better than revenue does, and it explains why the same handful of names keep appearing at the top of every aviation ranking. This list ranks the ten largest airlines in the world by number of aircraft operated. Three US majors sit above a thousand jets each, three Chinese carriers make the list, and one of the ten — SkyWest — you can't actually buy a ticket from directly.
United operates 1,112 mainline aircraft, the largest fleet of any airline in the world, spread across hubs at Chicago O'Hare, Newark, Denver, Houston, San Francisco, Los Angeles and Washington Dulles. That count excludes the several hundred smaller regional jets flown under the United Express banner by partner carriers.
American flies 1,013 mainline aircraft and is built around Dallas/Fort Worth, the largest airline hub in the world by departures, with Charlotte close behind. Its narrowbody fleet leans heavily on the Airbus A320 family inherited and expanded after the 2013 US Airways merger.
Delta operates 1,004 mainline aircraft from a hub structure anchored at Atlanta, the world's busiest passenger airport. It is the third and last carrier in the four-figure club, and is unusual among the majors for its willingness to keep older widebodies, such as the Boeing 767, flying alongside new A330neos and A350s.
China Southern operates 850 aircraft, the largest fleet in Asia, from its base at Guangzhou Baiyun. It left SkyTeam in 2019 to pursue bilateral partnerships instead, and it was the only Chinese carrier ever to operate the Airbus A380, which it retired in 2022.
Southwest operates 810 aircraft and every one of them is a Boeing 737, making it the largest 737 operator in the world. The single-type fleet is the foundation of its cost model: one set of spares, one pilot qualification and interchangeable aircraft across a point-to-point network.
China Eastern flies 664 aircraft from Shanghai's two airports, Hongqiao and Pudong. In 2023 it became the launch operator of the COMAC C919, China's first domestically built single-aisle airliner, putting it at the centre of the country's effort to break the Airbus-Boeing duopoly.
Ryanair operates 643 aircraft, the largest fleet in Europe and the only low-cost carrier in the global top ten. Like Southwest it is effectively an all-737 operation, and it carries more passengers per year than any other airline in Europe.
SkyWest operates 579 aircraft and sells almost no tickets of its own. It is the largest regional airline in the world, flying Embraer E175s and CRJs on behalf of United, Delta, American and Alaska — so its jets appear in those airlines' liveries and timetables rather than its own.
Turkish Airlines operates 545 aircraft from Istanbul Airport and flies to more countries than any other carrier in the world. Istanbul's geography does most of the work: it puts a large share of Europe, Africa, the Middle East and South Asia within narrowbody or short widebody range of a single hub.
Air China rounds out the top ten with 510 aircraft. As the country's flag carrier it operates from Beijing Capital, holds the prestige long-haul routes out of the capital and provides the aircraft used for Chinese state travel.
| # | Name | Country | Aircraft operated | Alliance | Main hub |
|---|---|---|---|---|---|
| 1 | United Airlines | United States | 1112 | Star Alliance | Chicago O'Hare |
| 2 | American Airlines | United States | 1013 | oneworld | Dallas/Fort Worth |
| 3 | Delta Air Lines | United States | 1004 | SkyTeam | Atlanta |
| 4 | China Southern Airlines | China | 850 | None | Guangzhou Baiyun |
| 5 | Southwest Airlines | United States | 810 | None | Dallas Love Field |
| 6 | China Eastern Airlines | China | 664 | SkyTeam | Shanghai |
| 7 | Ryanair | Ireland | 643 | None | Dublin |
| 8 | SkyWest Airlines | United States | 579 | None | Salt Lake City |
| 9 | Turkish Airlines | Turkey | 545 | Star Alliance | Istanbul |
| 10 | Air China | China | 510 | Star Alliance | Beijing Capital |
Airlines are ranked by the number of aircraft they operate, as compiled in February 2026 in Wikipedia's 'Largest airlines in the world' table, which sources each carrier's count from that airline's own fleet disclosures and regulatory filings. Fleet counts are a moving target: aircraft are delivered, stored, leased out and retired continuously, so figures from different dates will not agree exactly, and this list follows one compilation at one date rather than mixing sources. Definitions also differ by carrier — the three US majors' numbers are mainline fleets and exclude the regional aircraft flown on their behalf under United Express, American Eagle and Delta Connection branding, while some other carriers report at group level including subsidiaries. Aircraft on firm order but not yet delivered are excluded throughout.
Not necessarily. Fleet size counts aircraft, so carriers with lots of widebodies and long-haul flying rank higher than their passenger numbers suggest. Airlines flying dense short-haul networks — Ryanair in Europe, Southwest and Delta in the US — carry more passengers per aircraft each year than a long-haul operator does.
You probably have. SkyWest operates its 579 aircraft under contract for United, Delta, American and Alaska, so the flight is sold and branded as United Express, Delta Connection, American Eagle or Alaska SkyWest even though SkyWest owns the jet and employs the crew.
For the three US majors, no. United, American and Delta's figures are mainline fleets; the hundreds of smaller regional jets flown under their brands by partners such as SkyWest and Republic are counted separately, which is why SkyWest appears in its own right at number eight.
The order at the top is fairly stable, but the numbers are not. Large carriers take delivery of and retire aircraft every month, so any fleet figure is a snapshot; published counts for the same airline can differ by dozens of aircraft depending on the date and on whether subsidiaries are included.
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