Rated as the largest airlines in the United States, United Airlines whose original name was Varney Air Lines was founded in 1926. It is reported that the company features more than 86,800 employees and 702 aircrafts which include Airbus A320, Boeing 757-200s, Airbus A319, Boeing 767-300ERs, Boeing 747-400s as well as Boeing 777-200ERs and Boeing 777-200s. Based in Chicago and Illinois, United Airlines offers flights to 216 destinations across the world and its parent company is United Continental Holdings. At present, United sends their passengers from six main hubs; they are San Francisco Airport, Los Angeles Airport, International Airport of O'Hare at Chicago, Washington Dulles Airport as well as Denver Airport and Narita International Airport in Tokyo.
