United Airlines, Inc. is a major American airline headquartered at Willis Tower in Chicago, Illinois. United operates a large domestic and international route network, with an extensive presence in the Asia-Pacific region. It is a founding member of the Star Alliance, the world's largest airline alliance with a total of 28 member airlines. 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. The company employs over 86,000 people.
from Wikipedia, the free encylopedia