Chicago O’Hare International Airport, also known as O’Hare Airport, O’Hare Field, Chicago International Airport, or simply O’Hare, is a major airport located in the northwestern-most corner of Chicago, Illinois, United States, 17 miles northwest of the Chicago Loop It is the primary airport serving the Chicago area, with Chicago Midway International Airport, about 10 miles closer to the Loop, serving as a secondary airport for intracontinental flights.