ICAO		IATA		Other		Location
KTTD		TTD		TTD		Portland [Portland-Troutdale Airport], Oregon, US (50 mi / 80 km W)
				OR46		Condon [Ajax Airport], Oregon, US (50 mi / 80 km SE)
				56OR		Gresham [Mount Hood Medical Center Heliport], Oregon, US (50 mi / 81 km W)
				WN52		Cougar [Cougar Heliport], Washington, US (50 mi / 81 km NW)
				OR65		Estacada [Eagle Nest Ranch Airport], Oregon, US (51 mi / 83 km SW)
				5S9		Estacada [Valley View Airport], Oregon, US (52 mi / 83 km SW)
				WN10		Cougar [Mount St. Helen's Aero Ranch Airport], Washington, US (52 mi / 84 km NW)
				WA67		Vancouver [Green Mountain Airport], Washington, US (52 mi / 84 km W)
				WA79		Amboy [Walter Suttons Strip], Washington, US (52 mi / 84 km W)
				OR66		Estacada [Beaver Oaks Airport], Oregon, US (54 mi / 86 km SW)
				SHNM		Mount St. Helens National Volcanic Monument [Mount St. Helens NM], Washington, US (54 mi / 86 km NW)
				W58		Battle Ground [Cedars North Airport], Washington, US (54 mi / 88 km W)
				W56		Vancouver [Fly For Fun Airport], Washington, US (54 mi / 88 km W)
				OR76		Estacada [Cider Run Airport], Oregon, US (55 mi / 88 km SW)
				WA81		Vancouver [Evergreen North-South Airpark], Washington, US (55 mi / 89 km W)
				5WA9		Brush Prairie [Brush Prairie Aerodrome], Washington, US (56 mi / 90 km W)
				20OR		Redland [Warner's Airport], Oregon, US (56 mi / 90 km SW)
				OG54		Shaniko [Shaniko Cattle Airport], Oregon, US (56 mi / 90 km SE)
				WA87		Battle Ground [Parkside Airpark], Washington, US (57 mi / 91 km W)
				59AS		Battle Ground [Becker Field], Washington, US (57 mi / 91 km W)