Ronald Reagan Washington National Airport, commonly known as National, Washington National, Reagan, Reagan National, or DCA, is located in Arlington, Virginia and is the nearest commercial airport to Washington, D.C.; located 3 miles south of the central business district.
Built in 1940 by the federal government, it was originally called Washington National Airport, but was renamed to honor former President Ronald Reagan on his 87th birthday in 1998 by President Bill Clinton. It is owned by the Metropolitan Washington Airports Authority.
The airport is a focus city for U.S. Airways, which has near hourly flights to LaGuardia Airport (New York City) and Logan International Airport (Boston).
Reagan National has U.S. immigration and customs facilities for corporate jet traffic only, therefore it only recieves internation flights from airports with U.S. Customs and Border Protection preclearance (Nassau, Bermuda, and most major airports in eastern Canada).
You can get to DCA by flight (obviously), subway (via Ronald Reagan Washington National Airport Metro station), taxi (all fare is now metered), shuttle (door-to-door service available), or road (via George Washington Memorial Parkway or U.S. Route 1).