United Airlines

United Airlines, Inc. (commonly referred to as United) is a major American airline headquartered in Willis Tower in Chicago, Illinois.[12][13][14] United operates a large domestic and international route network spanning cities large and small across the United States and all six inhabited continents.[15] Measured by fleet size and the number of routes, it is the third-largest airline in the world.

United Airlines, Inc.
IATA ICAO Callsign
FoundedApril 6, 1926; 95 years ago (1926-04-06)
(as Varney Air Lines)
Boise, Idaho, U.S.[1]
Commenced operationsMarch 28, 1931; 90 years ago (1931-03-28)[2]
AOC #CALA014A[3]
Frequent-flyer programMileagePlus
AllianceStar Alliance
List of subsidiaries[4]
  • Chelsea Food Services
  • Covia LLC
  • Kion de Mexico, S.A. de C.V.
  • MileagePlus, Inc.
  • MileagePlus Holdings, LLC
  • United Aviation Fuels Corporation
  • United Cogen, Inc.
  • United Vacations, Inc.
  • United Ground Express, Inc.
Fleet size854[5]
Parent companyUnited Airlines Holdings
HeadquartersWillis Tower, Chicago, Illinois, U.S.
Key people
Revenue $43.259 billion (2019)[11]
Operating income $4.301 billion (2019)[11]
Net income $3.009 billion (2019)[11]
Total assets $52.611 billion (2019)[11]
Total equity $11.531 billion (2019)[11]
Employees~96,000 (December 2019)[11]

United has eight hubs, with Chicago–O'Hare being its largest in terms of passengers carried and the number of departures.[16] It is a founding member of the Star Alliance, the world's largest airline alliance with a total of 28 member airlines.[17] Regional service is operated by independent carriers under the brand name United Express. United was established by the amalgamation of several airlines in the late 1920s, the oldest of these being Varney Air Lines, which was founded in 1926.[1]

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