Can I make a 40 minute layover in Chicago?

If you're connecting on the same airline, in the same terminal, then yes, it should be enough time. Check first the airline's and flight's on-time record. If you need to change airlines, and terminals, it could be tight.



A 40-minute layover at Chicago O’Hare (ORD) is technically possible but extremely high-risk, especially if you are changing terminals or traveling with a group. O'Hare is one of the largest and busiest airports in the world; a simple delay in taxiing to the gate—which can take 20 minutes on a busy day—will effectively erase your connection time. Since boarding gates typically close 15 minutes before departure, a 40-minute window actually leaves you only 25 minutes to deplane and navigate the terminal. If your flights are on the same airline (e.g., United to United in Concourses B and C), you might make it with a brisk walk, but there is zero margin for error. If you have checked bags, the risk of them not making the transfer increases significantly. In 2026, travel experts generally advise a minimum of 60–90 minutes for domestic connections at ORD to avoid the high probability of a missed flight.

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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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The recommended layover time for international flights is generally longer, as you will have to go through customs and immigration before boarding your next flight. In most cases, a 30-minute layover for domestic flights and an hour for international flights is considered a minimum, or short, layover.

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terminal 3 has a number of concourses. 35 mins is not a lot of time to make it from the end of one to the end of the furthest one in the worst case scenario. then u have to add in the time taken to get off your arriving plane even if it is on time and when they will close the doors of your departing one.

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DFW has a new internal tram system that is close and quick. Appreciating that 40 minutes is tight, if you are on time the transit is no problem. While nobody likes to miss a connection, I'd keep the tight schedule and make them book me on the next flight rather than voluntarily sit around for several hours.

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If you miss your connection booked with the same airline that your were on for your first flight, and the issue is due to a delayed take off or anything else that's in the hands of your airline, it's the airline's responsibility to rebook you on the next available flight.

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That depends on a number of factors. If you're connecting on the same airline, in the same terminal, then yes, it should be enough time. Check first the airline's and flight's on-time record. If you need to change airlines, and terminals, it could be tight.

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Realistically, the answer is NO. Also, flights board 30 minutes or so (depending on size of the airplane) so they would be in the final stages of boarding AT BEST when you get to the gate. O'Hare arrivals at heavy traffic times are rarely exactly on-time.

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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. This may include a physical inspection of your luggage and personal items with a metal detector or a full-body scan.

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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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24 hour layover in Chicago On a long layover, you can really get to grips with the city. An overnight layover means a hotel stay, but it also means you can experience the city's nightlife and dining scene.

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In general, that should be fine. My understanding is that the minimum connecting time at O'Hare is 40 minutes, which generally means that the airlines expect to need 40 minutes to allow you enough time to get between flights as well as get your baggage to your next flight.

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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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Terminal 3 is the largest terminal at O'Hare, with 79 gates in Concourses G, H, K and L. Its main airlines are American Airlines and Spirit Airlines, though it also hosts several regional airlines.

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That depends on a number of factors. If you're connecting on the same airline, in the same terminal, then yes, it should be enough time. Check first the airline's and flight's on-time record. If you need to change airlines, and terminals, it could be tight.

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As a rule of thumb, on domestic routes, you need a minimum of 45 minutes between flights. That's because you don't have to go through security, customs, and immigration. Is 40 minutes enough time to catch a connecting flight?

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Try to schedule domestic connecting flights with at least 1.5 hours cushion time. For international flights, leave at least 2.5 hours. Planes almost never arrive as scheduled.

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If your itinerary was purchased as one ticket (as in: you have only one itinerary and one confirmation number), and the connection time was too short and you miss the second (or third) flight, you can rest easy, no matter what happens. The airline will simply put you onto the next available flight, free of charge.

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While, generally, the airline won't wait for connecting passengers, there might be some exceptions. If a flight is delayed, and there are many passengers who are connecting from this delayed flight onto the same connecting flight, the airline will hold the connecting flight for these passengers.

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While skiplagging isn't illegal, American Airlines filed a civil lawsuit earlier this month against Skiplagged.com, accusing the company of unauthorized and deceptive ticketing practices and tricking customers into believing they've gained access to a secret loophole.

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