<Tr> <Th> Total Passengers </Th> <Td> 22,892,504 4.2% </Td> </Tr> <Tr> <Td_colspan="2"> Source: Federal Aviation Administration, Passenger traffic </Td> </Tr> <P> Washington Dulles International Airport (/ ˈdʌlɪs / DUL - iss) (IATA: IAD, ICAO: KIAD, FAA LID: IAD) is an international airport in the eastern United States, located in Loudoun and Fairfax counties in Virginia, 26 miles (42 km) west of downtown Washington, D.C. </P> <P> Opened in 1962, it is named after John Foster Dulles (1888--1959), the 52nd Secretary of State who served under President Dwight D. Eisenhower . The Dulles main terminal is a well - known landmark designed by Eero Saarinen . Operated by the Metropolitan Washington Airports Authority, Dulles Airport occupies 13,000 acres (20.3 sq mi; 52.6 km) straddling the Loudoun - Fairfax line . Most of the airport is in the unincorporated community of Dulles in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County . The airport serves the Washington metropolitan area . </P>

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