The Marriott Hotel provides FREE shuttle service from Dulles International Airport
every 15 minutes. Go to airport exit 2A or 2H (signs will guide you to shuttle services).
Shuttles run all day long from early morning (4:30AM ) to 1:00 AM.
OTHER AIRPORTS AND LIMO/SHUTTLE SERVICES INCLUDE:
Ronald Reagan Washington National Airport http://www.metwashairports.com/reagan/reagan.htm
BWI Airport http://www.myairportsedan.com/companyPro.html?gclid=CP3lj9nM-K4CFcnc4AodIleayA
For more information see: http://dc.about.com/library/maps/blmapAirports.htm