Airports 3,551 to 3,600
Griffith-Merrillville Airport
Porter County Municipal Airport
Advocate South Suburban Hospital Heliport
ProMedica Dorothy L Kern Cancer Center Heliport
Rochelle Municipal Airport - Koritz Field
Griffing Sandusky Airport
ProMedica Defiance Regional Hospital Heliport
Lansing Municipal Airport
Gundersen Palmer Lutheran Hospital Heliport
Wyoming County Community Health Heliport
Bertrand Chaffee Hospital Heliport