High Quality Content by WIKIPEDIA articles! Lambert-St. Louis International Airport is the primary airport for St. Louis, Missouri, United States and the surrounding area. It is the largest international airport in the state of Missouri. The airport lies outside the St. Louis city limits in St. Louis County and is owned and operated by the City of St. Louis. Portions of the airport are located in an unincorporated area, while portions of the airport grounds are in the cities of Berkeley and Bridgeton. Lambert- St. Louis International Airport serves over 88 non-stop national and international destinations. In 2008, 14.4 million passengers traveled through the airport. In 1982, Trans World Airlines (TWA) established its hub at Lambert. Over 30 million passengers travelled through the airport per year in 1999 and 2000. American Airlines bought TWA and the Lambert hub in 2001. American reduced service levels gradually from 2003 through 2009 and ended its focus city operation on April5, 2010.