Is there a Terminal 4 at O Hare airport?

Even though Terminal 4 was no longer in use (it's now home to the airport's bus depot), Chicago O'Hare officials decided not to reuse the name, concerned that travelers would get confused and try to go to the site of the old Terminal 4. (Don't miss these other 11 cool airplane facts you've always wondered about.)



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Once Terminal 5's construction was done, airport authorities realized it made more sense to service all international flights (arrivals and departures) through the newly constructed terminal. Terminal 4 was no longer in service.

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While international flights arrive and depart from all the other O'Hare terminals, Terminal 5, which contains only one concourse, Concourse M, is mostly devoted to international flights.

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The terminals take between 10-20 minutes to walk between depending on your gate. If you're connecting internationally, you can take the shuttle to Terminal 5, which takes 10 minutes between the two farthest points.

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This is the O'Hare International Airport terminals map. Terminal 1, the ANA departure terminal, Terminal 2, Terminal 3, and Terminal 5, the ANA arrival terminal, are connected by the Airport Transit System (ATS), a shuttle service between terminals.

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If you arrive on an international flight (excluding those who have arrived from a preclearance airport), you must clear U.S. Customs and Border Protection (CBP) checkpoints and claim all checked luggage before being allowed to enter the United States, including travelers with connecting flights.

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Generally, the first three terminals are considered domestic terminals and are easily traversed. All three of these terminals are connected by pedestrian walkways, making them so much easier to cross than having to wait for transportation to take you to them.

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For domestic flights on different airlines where you have to switch terminals, plan for a minimum one hour connection. For international flights where O'Hare is your first port of entry to the US, two hours is safe.

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You'll need to clear customs and immigration. Next, you'll recheck your luggage for the domestic flight. Finally, you'll need to go through Transportation Security Administration screening.

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