From NATIONAL AIRPORT station subway to ARLINGTON CEMETERY station. 8min $2. From Dulles Airport Main Terminal & Arrivals/Door bus to N Moore St & 19Th St. 34min $3. From Bwi Airport & Pier E bus to GREENBELT station then subway to PENTAGON station. 1hrs 22min $6. From Richmond International Airport bus to Richmond, VA, train to KING STREET station, then subway to ARLINGTON CEMETERY station. 4hrs 05min $84. From Airport line 7 bus to Harrisburg, PA, line 4695 bus to UNION STATION station, subway to METRO CENTER station, then subway to ARLINGTON CEMETERY station. 4hrs 54min $33.