X-Plane 10 Scenery--Washington National Airport (KDCA), DC, USA, 1.0. Ronald Reagan Washington National Airport is a major airport 3 miles south of downtown Washington, D.C., in Arlington County, Virginia (VA). It is the nearest commercial airport to Washington, D.C and serves the Baltimore-Washington Metropolitan Area. For decades it was called Washington National Airport; it was renamed in 1998 to honor former U. S. President Ronald Reagan. Uses OpenSceneryX (required), default X-Plane 10 library and objects by GOLF1. By Rene Bruun.