ICAO		IATA		Other		Location
KECS		ECS		ECS		Newcastle [Mondell Field], Wyoming, US (57 mi / 92 km S)
				2SD5		Sturgis [Sturgis Heliport], South Dakota, US (57 mi / 92 km E)
				SD26		Sturgis [Mike Jacob Sturgis Heliport], South Dakota, US (60 mi / 96 km E)
				SD35		Sturgis [Bruch Airfield], South Dakota, US (61 mi / 98 km E)
				SD24		Sturgis [Eden Valley Airport], South Dakota, US (62 mi / 99 km E)
				49B		Sturgis [Muni], South Dakota, US (63 mi / 102 km E)
				SD33		Camp Crook [Sky Ranch For Boys Airport], South Dakota, US (64 mi / 102 km NE)
(KBDX)		(BDX)				Broadus, Montana, US (65 mi / 105 km NW)
				2SD0		Nemo [Paradise Valley Airport], South Dakota, US (66 mi / 106 km SE)
				8OA5		Camp Crook [Muni], South Dakota, US (68 mi / 110 km NE)
				MT05		Ekalaka [Laird Ranch Airport], Montana, US (68 mi / 110 km N)
		BDX		00F		Broadus, Montana, US (69 mi / 110 km NW)
				WY12		Gillette [Ohman Ranch Airport], Wyoming, US (74 mi / 119 km SW)
				SD25		Piedmont [Infinity Landing Airport], South Dakota, US (74 mi / 119 km SE)
				JECA		Jewel Cave National Monument [Jewel Cave NM], South Dakota, US (76 mi / 123 km SE)
				0SD9		Custer [Crazy Horse Heliport], South Dakota, US (76 mi / 123 km SE)
				0SD5		Custer [The Fort Heliport], South Dakota, US (77 mi / 124 km SE)
				SD18		Rapid City [Keystone Heliport], South Dakota, US (78 mi / 126 km SE)
				0SD3		Hoover [Bledsoe Ranch Airport], South Dakota, US (79 mi / 127 km NE)
				26SD		Radip City [Shooting Star Ranch Heliport], South Dakota, US (79 mi / 128 km SE)