Airports 4,001 to 4,050
John H. Stroger Hospital of Cook County Heliport
Chicago Midway International Airport
Illinois Valley Parachute Club Airport
Crosby Municipal Airport
Frankfort Dow Memorial Field
Pittsfield Penstone Municipal Airport
Ann & Robert H Lurie Children's Hospital Heliport
Sidney - Richland Regional Airport
Chicago Fire Department Quinn Fire Academy Heliport
Ridgeview Ranch Airport
Munson Healthcare Manistee Hospital Heliport