For London-Washington flights, you can use City Airport, Gatwick Airport, Heathrow Airport, Luton Airport, Stansted Airport, Windsor and Eton Central Railway Railway Station, Euston Railway Station, King's Cross Railway Station, Paddington Railway Station, St Pancras Railway Station, Tottenham Hale station Railway Station, Victoria station Railway Station, Waterloo International Railway Station as departure airport, and Baltimore Washington International (BWI) Thurgood Marshall Airport, Baltimore Greenbelt Airport, Bolling Afb Airport, Buzzards Pt S Airport, Dulles Intl. Airport, Pentagon Army Airport, Ronald Reagan Washington National Airport for arrival.