When exiting the airport, follow the signs towards Washington DC 13 miles on the Dulles Access to road to I-495 North, towards Baltimore. Take I-270 North. Take Exit 11 - Montgomery Village Ave. Go 1/4 mile and turn right on 355. At the first light on 355 South, turn right onto Perry Parkway. Towneplace Suites is 1 mile down on the right.