South Bend Regional Airport (SBN/KSBN)

Hoosier Air Museum

Greater Fort Wayne Aviation Museum

Armstrong Air and Space Museum

Grissom Air Museum

Yankee Air Museum

Vintage Wings & Wheels Museum

The Warbird Heritage Foundation

Russell Military Museum

National Model Aviation Museum

The Larry D. Bell Aircraft Museum

National American Huey History Museum

Octave Chanute Aerospace Museum

Air Classics Aviation Museum

National Museum of the Great Lakes

Sure, it is mostly a boat museum. But the Great Lakes hosted early training for WWII fighter...

Butch O'Hare Exhibit at O'Hare International Airport

Air Zoo

Illinois Aviation Museum at Bolingbrook

Mitchell Gallery of Flight

Rolls-Royce Heritage Trust

Museum of Science and Industry