Chicago Rockford International Airport

General aviation reliever near Chicago in West Chicago, Illinois, serving corporate, private and flight-training traffic with hangars, FBO services and maintenance, convenient for access to the western suburbs.

General aviation reliever airport northwest of downtown Chicago, serving business, private and charter flights and offering flight training and FBO services for the northern suburbs.

Major air hub serving Chicago and the Midwest, with extensive domestic and international routes, multiple terminals, and direct transit links to downtown for convenient connections.

Milwaukee’s primary commercial airport serves domestic and seasonal international routes about 10 miles south of downtown, offering rental cars, transit links and year‑round airline service.

Serving Chicago’s Southwest Side and downtown, it handles mainly domestic flights with a strong presence of low-cost carriers and easy connections via the 'L' Orange Line and nearby expressways.

Former single-runway general aviation facility on Chicago’s lakefront adjacent to downtown, serving business and private flights until its abrupt closure in 2003.