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FAQ: Washington, DC Airports. Flying into Washington, DC. There are three major airports in the Washington, DC region: Ronald Reagan Washington National Airport (airport code: DCA), Washington Dulles International Airport (airport code: IAD) and Baltimore/Washington International Thurgood Marshall Airport (airport code: BWI). All three offer multiple U.S. and international flights daily.
Washington, DC is accessible by three major airports. Travel times and taxi fares may vary depending on traffic. Ronald Reagan Washington National Airport (DCA). Reagan National Airport is served by 15 commercial airlines and is located 5 miles (20 minutes) from downtown Washington, DC and the Convention Center.1  Taxi: approximately $15. 2  Metro: Ronald Reagan Washington National Airport (Blue and Yellow Lines).ulles is served by 33 commercial airlines and is located 27 miles (50 minutes) from downtown Washington, DC and the Convention Center. 1  Taxi: approximately $65. 2  Metro: WMATA 5A to L'Enfant Plaza (Green, Yellow, or Blue line) or Silver Line Express ($5) to Wiehle-Reston East (Silver Line).