Timberline airports ::
The nearest airport is BWI - Baltimore Washington Intl, located 4.6 km west of Timberline.
Other airports nearby include ADW - Camp Springs Andrews Afb (Washington Dc Naf) (45.5 km south west), APG - Aberdeen Phillips Aaf (50.6 km north east), DCA - Ronald Reagan Washington Natl (50.9 km south west), IAD - Washington Dulles Intl (77.0 km west),