ICAO		IATA		Other		Location
				IN16		Crown Point [Crown Point Airfield], Indiana, US (46 mi / 75 km SE)
				IN13		Cedar Lake [Bianchi Heliport], Indiana, US (47 mi / 75 km SE)
				5IL7		Seneca [Howard Heliport], Illinois, US (47 mi / 76 km SW)
				0C0		Harvard [Dacy Airport], Illinois, US (47 mi / 76 km NW)
				WN63		Bristol, Wisconsin, US (47 mi / 76 km N)
				3HO		Hobart [Hobart Sky Ranch Airport], Indiana, US (47 mi / 76 km SE)
				IS59		Kirkland [Rotstein Airport], Illinois, US (47 mi / 76 km NW)
				IN7		Cedar Lake [Cedar Lake SPB], Indiana, US (47 mi / 76 km SE)
				IL36		Belvidere [Bob Walberg Field], Illinois, US (47 mi / 76 km NW)
				LL24		Manteno [Sunset Acres Airport], Illinois, US (47 mi / 76 km S)
				8IL4		Harvard [Mercy Harvard Hospital Heliport], Illinois, US (48 mi / 77 km NW)
				II57		Merrillville [Nipsco Southlake Complex Heliport], Indiana, US (48 mi / 77 km SE)
				1LL2		Seneca [Spring Brook Airport], Illinois, US (48 mi / 77 km SW)
				7IL0		Grant Park [Mussman Airport], Illinois, US (48 mi / 78 km SE)
				05IL		Bonfield [Classic Landings Airport], Illinois, US (48 mi / 78 km S)
				0II8		Lowell [Sutton's Field], Indiana, US (48 mi / 78 km SE)
				43II		Merrillville [Kirk Heliport], Indiana, US (48 mi / 78 km SE)
				8N2		Ottawa [Skydive Chicago Airport], Illinois, US (49 mi / 78 km SW)
				00IN		Hobart [St. Mary Medical Center Heliport], Indiana, US (49 mi / 78 km SE)
				IL53		Steward [Durin Airport], Illinois, US (49 mi / 79 km W)