Washington - Baltimore Washington International, DC, USA (BWI)
Washington - Washington - All Airports, DC, USA (WAS)
Washington - Ronald Reagan National Airport, DC, USA (DCA)
Washington - Washington Dulles, DC, USA (IAD)
The code is DCA.
WAS is a valid airport code. It is the airport code that applies to all Washington, DC area airports.
Washington Dulles International is the busiest airport in Washington DC
Washington, DC is served by three international airports: * Ronald Reagan Washington National Airport (airport code: DCA), located 5 miles to the south of DC in Arlington County, VA, * Washington Dulles International Airport (airport code: IAD), located 25 miles to the west of DC in Loudoun and Fairfax Counties, VA, and * Baltimore/Washington International Thurgood Marshall Airport (airport code: BWI), located 10 miles north of DC in Linthicum, MD. Of these airports, only DCA currently is served by Metrorail. PS: Of course, if you're traveling to DC, then you can fly in to any airport farther away, too.
DCA is (Ronald) Reagan National Airport in Arlington, VA -- just outside of Washington DC.
Ronald Regan National Airport (used to be called National) is just across the Potomac from DC. It is also on the metro line so it is easy to get to. Airport code is DCA Dullas International Airport (normally called Dullas) is about 30-45 minutes from DC in northern Virginia. Airport code is IAD Baltimore Washington International Airport is north of DC towards Baltimore. It is about 45-60 minutes north of DC and you can get there off 95 North or via Amtrak or train. Airport code is BWI. Metropolitan Airport authority manages IAD and DCA
The airport code for Richland Airport - Washington - is RLD.
Washington Dulles International Washington, DC Source: http://www.world-airport-codes.com
The airport code for Mount Washington Regional Airport is HIE.
The airport code for Southwest Washington Regional Airport is KLS.
The airport code for Washington Dulles International Airport is IAD.
The nearest airports to Washington, DC are Reagan International Airport (DCA) which is right near town and Dulles Airport (IAD) which is west of town but is the major international airport for the area.