United Airlines flights
United Airlines is a major operator on the American market, and in fact the third largest airline in the world. The airline has eight hubs, where the biggest one is Chicago. The other hubs are found in Denver, Los Angeles and San Francisco among others. United Airlines is a founding member of the largest airline alliance in the world – Star Alliance. They offer more than 300 destinations worldwide.
An airline hub is an airport where the airline has a heavy presence and normally some kind of headquarters. On the other hand, a focus city is a destination where the airline operates limited point-to-point routes. In these cities, the airline doesn’t necessarily need to have an office (even though this sometimes is the case). Many low-cost airlines don't use the definition 'hub' but instead define their main airports of operations as an operating base.
IATA Code: UA
ICAO Code: UAL