World’s second largest airlines measured by the scheduled passenger kilometers flown and number of destinations served.
Headquartered in Chicago, USA, this airline operates a comprehensive domestic and international network of routes with a significant presence in the Asia-Pacific region. Present United Airlines is a combination of a number of air carriers that merged stating with 1930s.
It was founded in 1926 as Varney Air Lines, the air mail service of Walter Varney. Later it became a part of United Aircraft and Transport Corporation (UATC). In 1934, UATC separated into United Aircraft, the Boeing Airplane Company and United Airlines.
United Airlines operates from eight domestic hubs such as George Bush Intercontinental Airport in Houston, Chicago O’Hare International Airport in Chicago, Newark Liberty International Airport and Tokyo Narita International Airport in Japan. It became the first U.S. carrier to receive a Boeing 787 Dreamliner in 2012. Its fleet consists mainly of Boeing Aircraft with the exception of Airbus A319, A320. United Airlines is also a founding member of the Star Alliance, which is world’s largest airlines alliance, carrying 630 million passengers per year.
All of its domestic hubs are located in large population centers or business districts. As a result a significant proportion of its air traffic is “origin and destination” traffic. Also the hub and spoke model used allows it to offer more frequent flights which would not be possible if each route was served directly. It also allows it to serve service to more cities with limited airplanes.
It also has service agreements with regional airlines such as Republic Airlines, ExpressJet Airlines etc. which allows it to provide connectivity to smaller cities using the network of the partner airlines. The revenue from such traffic is divided according to their prior agreement.