United Airlines, commonly known as United, is the world’s third largest airline by revenue and fleet size, and one of the founding members of Star Alliance. In 2010, the airline acquired Continental Airlines, then the third largest airlines in the country. United operates out of nine hub airports, of which Houston Intercontinental, the former Continental Airlines principle base, is the largest. Other major hubs include Chicago O’Hare, Newark and Denver.
Cleveland, Denver, Houston, Los Angeles, Newark, San Francisco, Washington Dulles