Airports 501 to 550
Whiteside County Airport - Joseph H Bittorf Field
Pottinger Restricted Landing Area Airport
Ottawa Airport / Skydive Chicago Airfield
Middleton Municipal Morey Field
Williard Nycum Restricted Landing Area Airport
Hartford Municipal Airport
Chicago Fire Department Air Sea Rescue Heliport
UChicago Medicine Ingalls Memorial Heliport
Advocate South Suburban Hospital Heliport
Froedtert West Bend Hospital Heliport
Morrisonville International Airport
Morrisonville, Wisconsin, United States — 117 km (63 nm) NNW