ICAO		IATA		Other		Location
				72IL		Warrenville [Cornerstone Heliport], Illinois, US (47 mi / 76 km SW)
				7IS5		Gilberts [Koppie Airport], Illinois, US (48 mi / 77 km W)
				10C		Greenwood/Wonder Lake [Galt Field], Illinois, US (48 mi / 77 km W)
				IL42		Woodstock [Centegra Hospital-Woodstock Heliport], Illinois, US (48 mi / 77 km W)
				IL74		Huntley [Centegra Hospital-Huntley Heliport], Illinois, US (48 mi / 77 km W)
				0WN5		North Cape [Potts Field Ultralight Flightpark], Wisconsin, US (48 mi / 78 km NW)
				IN70		Chesterton [Bodin Airport], Indiana, US (48 mi / 78 km SE)
				IN28		Munster [Community Hospital Heliport], Indiana, US (48 mi / 78 km S)
				6IS2		Lemont [Lemont Fire Department Heliport], Illinois, US (49 mi / 78 km SW)
				8IL8		Hazel Crest [Advocate South Suburban Hospital Heliport], Illinois, US (49 mi / 78 km S)
				82IS		Huntley [Landings Condominium Airport], Illinois, US (49 mi / 78 km W)
				6IL2		Huntley [Phyllis Field], Illinois, US (49 mi / 79 km W)
				LL11		Naperville [Edward Hospital Heliport], Illinois, US (49 mi / 79 km SW)
				3HO		Hobart [Hobart Sky Ranch Airport], Indiana, US (49 mi / 79 km S)
				IN40		Munster [Franciscan Health Munster Heliport], Indiana, US (49 mi / 79 km S)
KIGQ				IGQ		Chicago [Lansing Muni], Illinois, US (50 mi / 80 km S)
				IN24		Michigan City [Franciscan Health Michigan City Heliport], Indiana, US (50 mi / 81 km SE)
KMGC		MGC		MGC		Michigan City [Muni-Phillips Field], Indiana, US (50 mi / 81 km SE)
				62C		Franksville [Cindy Guntly Memorial Airport], Wisconsin, US (50 mi / 81 km NW)
				05C		Griffith [Griffith-Merrillville Airport], Indiana, US (51 mi / 81 km S)