ICAO		IATA		Other		Location
KTTD		TTD		TTD		Portland [Portland-Troutdale Airport], Oregon, US (33 mi / 52 km NE)
				1WA0		Vancouver [Legacy Salmon Creek Hospital Heliport], Washington, US (33 mi / 52 km NE)
				8OR6		Scappoose [Grabhorn's Airport], Oregon, US (33 mi / 53 km N)
				OR72		Boring [Fly JLA Airport], Oregon, US (33 mi / 53 km E)
				OR35		Boring [Flying K Bar J Ranch Airport], Oregon, US (33 mi / 53 km E)
				6OR7		Boring [Schmidt Airport], Oregon, US (33 mi / 54 km E)
				W56		Vancouver [Fly For Fun Airport], Washington, US (34 mi / 55 km NE)
				0OR7		Monmouth [Marr Field], Oregon, US (34 mi / 55 km SW)
				S48		Sandy [Country Squire Airpark], Oregon, US (35 mi / 56 km E)
				WA67		Vancouver [Green Mountain Airport], Washington, US (35 mi / 56 km NE)
				OG52		Monmouth [JPM Airport], Oregon, US (35 mi / 57 km SW)
				1W1		Camas [Grove Field], Washington, US (35 mi / 57 km NE)
				5WA9		Brush Prairie [Brush Prairie Aerodrome], Washington, US (36 mi / 57 km NE)
				5OR7		Stayton [Santiam Memorial Hospital Helistop], Oregon, US (36 mi / 58 km S)
				2OR3		Jefferson [Davidson Field], Oregon, US (36 mi / 58 km S)
				4OR6		Sandy [Stargazer Field], Oregon, US (36 mi / 59 km E)
				34WA		Washougal [Orbit Heliport], Washington, US (37 mi / 59 km NE)
				OG29		Sandy [McKinnon Airpark], Oregon, US (37 mi / 59 km E)
				03S		Sandy [Sandy River Airport], Oregon, US (37 mi / 59 km E)
				21OG		Jefferson [Ames Airport], Oregon, US (37 mi / 60 km S)