This chantilly hotel is just 7 miles 113 kilometers from washington dulles international airport the national air and space museum steven f udvar hazy center is 5 miles 8 kilometers away and manassas national battlefield park is 95 miles 153 kilometers away youll have plenty to do at marriott westfields as the hotel features tennis courts indoor and outdoor pools a spa tub steam room and 24 hour fitness facility sit back with a drink at the barlounge dining options at the