what county is chantilly va in
Chantilly. Chantilly is located in western Fairfax County in the Northern Virginia region of Virginia. During the Civil War, the Battle of Chantilly took place nearby. It is approximately 24 miles from Washington D.C. and is home to Dulles International Airport.1  Region: Northern Virginia. 2  Locality Fairfax.ocated in Chantilly, Sully Historic Site, which was the home of Richard Bland Lee, northern Virginiaâs first representative to congress and Robert E. Leeâs uncle, gives visitors a peek into what life was like eighteenth century. See All.