ICAO		IATA		Other		Location
				62LL		Yorkville [Rush Copley Emergency Center Heliport], Illinois, US (45 mi / 72 km SW)
				66IL		Marengo [Aerogrange Airport], Illinois, US (45 mi / 72 km W)
				44IL		Minooka [Wilson Heliport], Illinois, US (45 mi / 72 km SW)
				II57		Merrillville [Nipsco Southlake Complex Heliport], Indiana, US (45 mi / 73 km SE)
				C56		Monee [Bult Field], Illinois, US (45 mi / 73 km S)
				57IL		Peotone [South Suburban Heliport], Illinois, US (46 mi / 74 km S)
				4LL8		Sycamore [Colonial Acres Airport], Illinois, US (46 mi / 74 km W)
				43II		Merrillville [Kirk Heliport], Indiana, US (46 mi / 74 km SE)
				IS57		Marengo [Wind Rose Farm Airport], Illinois, US (46 mi / 74 km W)
				IN16		Crown Point [Crown Point Airfield], Indiana, US (46 mi / 74 km SE)
				3IN0		Portage [Flying M Airport], Indiana, US (46 mi / 74 km SE)
				59IL		Maple Park [Ruder Airport], Illinois, US (46 mi / 75 km W)
				1WI4		Racine [Johnson Wax Heliport], Wisconsin, US (47 mi / 75 km N)
				IN70		Chesterton [Bodin Airport], Indiana, US (47 mi / 75 km SE)
				4LL7		Sycamore [Willadae Farms Airport], Illinois, US (47 mi / 75 km W)
				50WI		Mount Pleasant [S C Johnson Waxdale Heliport], Wisconsin, US (47 mi / 76 km N)
				C89		Sturtevant [Sylvania Airport], Wisconsin, US (47 mi / 76 km N)
				WI86		Kansasville [Ori Airport], Wisconsin, US (48 mi / 76 km NW)
				08IL		Cortland [Marshall Farms Airport], Illinois, US (48 mi / 77 km W)
				IN13		Cedar Lake [Bianchi Heliport], Indiana, US (48 mi / 77 km S)