ICAO		IATA		Other		Location
KTTD		TTD		TTD		Portland [Portland-Troutdale Airport], Oregon, US (26 mi / 42 km W)
				OR35		Boring [Flying K Bar J Ranch Airport], Oregon, US (26 mi / 42 km SW)
				OR72		Boring [Fly JLA Airport], Oregon, US (26 mi / 42 km SW)
				56OR		Gresham [Mount Hood Medical Center Heliport], Oregon, US (27 mi / 43 km SW)
				36WA		Trout Lake [Bob's Field], Washington, US (28 mi / 45 km NE)
				WA67		Vancouver [Green Mountain Airport], Washington, US (28 mi / 45 km W)
				S48		Sandy [Country Squire Airpark], Oregon, US (28 mi / 45 km SW)
				66WA		Trout Lake, Washington, US (29 mi / 47 km NE)
				6OR2		The Dalles [Chenoweth Airpark], Oregon, US (30 mi / 49 km E)
				W56		Vancouver [Fly For Fun Airport], Washington, US (30 mi / 49 km W)
				W58		Battle Ground [Cedars North Airport], Washington, US (31 mi / 49 km W)
				OR65		Estacada [Eagle Nest Ranch Airport], Oregon, US (31 mi / 49 km SW)
				WA81		Vancouver [Evergreen North-South Airpark], Washington, US (31 mi / 50 km W)
				6OR1		The Dalles [Pointers Airport], Oregon, US (31 mi / 50 km E)
				WA79		Amboy [Walter Suttons Strip], Washington, US (31 mi / 50 km NW)
				5WA9		Brush Prairie [Brush Prairie Aerodrome], Washington, US (32 mi / 51 km W)
				5S9		Estacada [Valley View Airport], Oregon, US (32 mi / 52 km SW)
				WN10		Cougar [Mount St. Helen's Aero Ranch Airport], Washington, US (32 mi / 52 km NW)
				WN52		Cougar [Cougar Heliport], Washington, US (33 mi / 53 km NW)
				21WA		Vancouver [St. Joseph Community Hospital Heliport], Washington, US (33 mi / 54 km W)