Dulles International Airport is a planned Washington Metro station at Dulles International Airport in Loudoun County, Virginia on the Silver Line. It is scheduled to begin operation in 2015, linking Dulles by rail to Washington, D.C. and Ronald Reagan Washington National Airport.
A Washington Metro station had been considered for Dulles since at least 1969, but formal plans were not made until 2002, with the first phase of the project commencing in 2004. According to a 1969–1970 engineering study, a full-scale Metro station was planned (but never built) 28 feet (8.6 m) below a parking lot. The originally planned single-side platform station would not meet current Metro specifications for a center platform.