what is the name of main airport in baltimore?
An efficient mass transit system delivers passengers to the city's international airport and to the major airports of Washington, D.C., to the south. Baltimore/Washington International Thurgood Marshall Airport (bwiairport.com), commonly called BWI, is about 10 miles south of downtown Baltimore. Motels, served by courtesy shuttles, ring the airport and city buses and the MARC train's Penn line provide public transportation into the city.