ICAO		IATA		Other		Location
KECS		ECS		ECS		Newcastle [Mondell Field], Wyoming, US (52 mi / 84 km S)
				2SD5		Sturgis [Sturgis Heliport], South Dakota, US (60 mi / 97 km E)
				SD26		Sturgis [Mike Jacob Sturgis Heliport], South Dakota, US (63 mi / 101 km E)
				SD35		Sturgis [Bruch Airfield], South Dakota, US (65 mi / 104 km E)
				SD24		Sturgis [Eden Valley Airport], South Dakota, US (65 mi / 105 km E)
				WY12		Gillette [Ohman Ranch Airport], Wyoming, US (66 mi / 106 km SW)
				49B		Sturgis [Muni], South Dakota, US (66 mi / 107 km E)
				2SD0		Nemo [Paradise Valley Airport], South Dakota, US (67 mi / 108 km SE)
(KBDX)		(BDX)				Broadus, Montana, US (68 mi / 110 km NW)
		BDX		00F		Broadus, Montana, US (71 mi / 115 km NW)
				SD33		Camp Crook [Sky Ranch For Boys Airport], South Dakota, US (72 mi / 115 km NE)
				WY13		Gillette [Little Buffalo Ranch Airport], Wyoming, US (73 mi / 118 km SW)
				JECA		Jewel Cave National Monument [Jewel Cave NM], South Dakota, US (73 mi / 118 km SE)
				MT05		Ekalaka [Laird Ranch Airport], Montana, US (75 mi / 120 km N)
				0SD9		Custer [Crazy Horse Heliport], South Dakota, US (75 mi / 120 km SE)
				WY09		Dull Center (SW Clareton) [Sherwin Field Number 1 Airport], Wyoming, US (75 mi / 121 km S)
				WY22		Savageton [Iberlin Ranch Number 1 Airport], Wyoming, US (75 mi / 121 km SW)
				0SD5		Custer [The Fort Heliport], South Dakota, US (76 mi / 122 km SE)
				8OA5		Camp Crook [Muni], South Dakota, US (76 mi / 122 km NE)
				SD25		Piedmont [Infinity Landing Airport], South Dakota, US (76 mi / 122 km E)