ICAO		IATA		Other		Location
				SD04		Opal [Keystone Xl Opal Heliport], South Dakota, US (183 mi / 295 km NE)
				25NE		Melbeta [Corr Airport], Nebraska, US (183 mi / 295 km SE)
				1MT5		Miles City [Holy Rosary Hospital Heliport], Montana, US (184 mi / 297 km N)
				6S1		Bridger [Muni], Montana, US (185 mi / 298 km NW)
				WY05		Cheyenne [Skyview Airpark], Wyoming, US (185 mi / 298 km S)
				WY50		Cheyenne [Cheyenne Echo Heliport], Wyoming, US (185 mi / 298 km S)
KCYS		CYS		CYS		Cheyenne [Cheyenne Regional/Jerry Olson Field], Wyoming, US (186 mi / 299 km S)
KFEW		FEW		FEW		Cheyenne [Francis E Warren AFB Heliport], Wyoming, US (186 mi / 299 km S)
				9V5		Rushville [Modisett Airport], Nebraska, US (187 mi / 300 km E)
KMLS		MLS		MLS		Miles City [Frank Wiley Field], Montana, US (187 mi / 300 km N)
				PPNM		Pompeys Pillar National Monument [Pompeys Pillar NM], Montana, US (188 mi / 303 km NW)
				6U7		Hysham, Montana, US (189 mi / 304 km N)
				MT13		Billings [Ostlunds Airport], Montana, US (189 mi / 304 km NW)
				NE32		Alliance [Box Butte General Hospital Med-I-Port Heliport], Nebraska, US (189 mi / 304 km SE)
				1SD4		Faith [Vig Limousin Airport], South Dakota, US (189 mi / 305 km NE)
				SD48		Faith [Blomberg 42 Ranch Airport (Private)], South Dakota, US (190 mi / 305 km NE)
				MT29		Miles City [Sunday Creek Airpark], Montana, US (190 mi / 306 km N)
				WY46		Cheyenne [Radio Ranch Airport], Wyoming, US (191 mi / 307 km S)
				63MT		Billings [Billings Flying Service Airport], Montana, US (191 mi / 307 km NW)
				WY45		Hillsdale [Michael Skypark Airport], Wyoming, US (191 mi / 308 km SE)