United Air Lines, Inc., trading as United Airlines (NASDAQ: UAUA), is a major airline of the United States. It is a subsidiary of UAL Corporation with corporate offices in Chicago at 77 West Wacker Drive in the Chicago Loop. United's largest hub is O'Hare International Airport, where it has more than 550 daily departures. United also has hubs in Denver International Airport, Washington Dulles International Airport, San Francisco International Air...
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United Air Lines, Inc., trading as United Airlines (NASDAQ: UAUA), is a major airline of the United States. It is a subsidiary of UAL Corporation with corporate offices in Chicago at 77 West Wacker Drive in the Chicago Loop. United's largest hub is O'Hare International Airport, where it has more than 550 daily departures. United also has hubs in Denver International Airport, Washington Dulles International Airport, San Francisco International Airport, and Los Angeles International Airport. Its largest maintenance hub is the Maintenance Operations Center at San Francisco International Airport. United's parent company UAL Corporation announced that it will move its operational base from Elk Grove Township, Illinois to the Willis Tower (formerly Sears Tower) in downtown Chicago in 2010.
As of July 31, 2006, United was the world's third largest airline by revenue-passenger-miles (behind Delta Air Lines and American Airlines), third-largest by total operating revenues (behind Air France...
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