ICAO		IATA		Other		Location
				WN59		Onalaska [Nelsons Nitch Airport], Washington, US (37 mi / 60 km N)
				5WA6		Napavine [Foster Heliport], Washington, US (37 mi / 60 km N)
KTTD		TTD		TTD		Portland [Portland-Troutdale Airport], Oregon, US (38 mi / 61 km SE)
				OR37		Tigard [Lincoln Tower Heliport], Oregon, US (39 mi / 63 km S)
				OR28		Beaverton [Harvey's Acres Airport], Oregon, US (39 mi / 63 km S)
				34WA		Washougal [Orbit Heliport], Washington, US (39 mi / 63 km SE)
				6WA1		Camas [Sampson Heliport], Washington, US (39 mi / 64 km SE)
				OR00		Beaverton [Flying K Ranch Airport], Oregon, US (40 mi / 64 km S)
				WT51		Mossyrock [Fire District 3 Heliport], Washington, US (40 mi / 64 km NE)
				56OR		Gresham [Mount Hood Medical Center Heliport], Oregon, US (40 mi / 64 km SE)
				OR23		Astoria [Karpens Airport], Oregon, US (40 mi / 64 km W)
				FA99		Chehalis [Fantasy Field Airstrip], Washington, US (40 mi / 64 km N)
				7S3		Hillsboro [Stark's Twin Oaks Airpark], Oregon, US (40 mi / 65 km S)
				2OG3		Lake Oswego [Wiley's SPB], Oregon, US (41 mi / 66 km S)
				WA78		Washougal [Sky River Ranch Airport], Washington, US (41 mi / 66 km SE)
				WN74		Onalaska [Burnt Ridge Airstrip], Washington, US (41 mi / 66 km N)
				4WA1		Skamania [Brown's Cape Horn Airport], Washington, US (41 mi / 67 km SE)
				WA63		Washougal [Pleasant Farm Airport], Washington, US (42 mi / 67 km SE)
				OR31		Hillsboro [Sohler's Holly Hill Airport], Oregon, US (42 mi / 67 km S)
				OG34		Tigard [Meyer Riverside Airpark], Oregon, US (42 mi / 68 km S)