United Airlines is a prominent airline in the United States, based in Chicago, Illinois. The airline has the largest domestic and international route network in the United States. Established in 1926, it serves over 350 destinations across more than 50 countries on six continents, making it one of the largest and most connected airlines in the world. United Airlines is a founding member of Star Alliance and extends its network throughout the world. With its renowned opulent amenities, United now runs eight hubs as part of its hub-and-spoke transportation network. Browse WhereAirlinesAre to view the complete list of Turkish Airlines offices.