Washington Dulles International Airport lies partly within Fairfax County and provides most air service to the county.
Fairfax is also served by two other airports in the Washington area, Ronald Reagan Washington National Airport and Baltimore-Washington International Thurgood Marshall Airport.
 Manassas Regional Airport, in neighboring Prince William County, is also used for regional cargo and private jet service.

From 1945 to 1961, the eastern part of Fairfax County hosted Falls Church Airpark, an airfield primarily used for general aviation and civil defense purposes until encroaching residential development forced its closure.
The area formerly occupied by the airport is now mainly used as a shopping center with the western end of the complex occupied by the Thomas Jefferson branch of the Fairfax County Public Library system.
Parts of several apartment complexes are also located on some of the airport's former grounds.
Washington Dulles International Airport lies partly within Fairfax County and provides most air service to the county. Fairfax is also served by two other airports in the Washington area, Ronald Reagan Washington National Airport and Baltimore-Washington International Thurgood Marshall Airport.  Manassas Regional Airport, in neighboring Prince William County, is also used for regional cargo and private jet service.
From 1945 to 1961, the eastern part of Fairfax County hosted Falls Church Airpark, an airfield primarily used for general aviation and civil defense purposes until encroaching residential development forced its closure. The area formerly occupied by the airport is now mainly used as a shopping center with the western end of the complex occupied by the Thomas Jefferson branch of the Fairfax County Public Library system. Parts of several apartment complexes are also located on some of the airport's former grounds.
Fairfax County, Virginia