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There are 3 airports in Washington DC. Ronald Reagan National Airport (DCA) is Washington DC’s primary airport with at least domestic flights and international flights departing from its runways every week. As of today, airlines operate out of Ronald Reagan National Airport (DCA). Ronald Reagan National Airport (DCA) is 2.7 miles from Washington DC and offers nonstop flights to cities. Washington DC’s secondary airport Dulles Intl Airport (IAD) is 23.1 miles from Washington DC and has airlines operating out of it and offers nonstop flights to cities with at least domestic flights and international flights departing each week.