Baltimore Washington International Thurgood Marshall Airport likes to keep things simple: departures leave from the upper level, while arrivals fly into the lower level. Located only 10 miles from downtown Baltimore and 30 miles from Washington D.C., it is a good alternative to Dulles International and Washington National. BWI is one of the busiest (and most conveniently situated) airports on the East Coast. Fun fact: This airport was featured in "The Silence of the Lambs," though we don't expect you'll find Jodie Foster here.