Washington Metropolitan Area Transit Authority
Metro offers BWI Express Metro bus service between BWI Marshall Airport and the Greenbelt Metro Station. The BWI Express/B30 service runs every 60 minutes from BWI Marshall Airport during these times: Monday-Friday 6:30 a.m.-9:33 p.m. For more information, call 202-637-7000.
Catch the BWI Express from BWI Marshall Airport. There are two WMATA Bus Stops. One is located on the lower level of the International Concourse and the other stop is located on the lower level of Concourse A/B. The B30 will pick you up outside at the bus shelter. Follow the signs that say "Public Transit."
The Greenbelt Metro Station connects to metro stations throughout the District of Columbia, Northern Virginia, and Montgomery and Prince Georges Counties. A route map and schedule is available now on WMATA's website, www.wmata.com.