Do you have to go through security twice for connecting flights?

Generally no, unless you leave the secured terminal. Sometimes you have to transfer to another terminal, and if that is via a bus or tram from inside the secure area, usually don't have to re-scan. But if you go out of the secure area for some reason you'll have to re-enter through a TSA checkpoint.



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For connecting domestic flights, you almost never have to exit and reenter security, though there are some exceptions at airports where the terminals aren't all connected. For domestic-to-international connection, it's still pretty rare that you have to exit and reenter security, even if you're changing terminals.

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Go through security and customs to the gate of your next flight — just like you did at your departure airport. ?? If the self-transfer is too short, we won't offer you checked baggage at all — you would not have enough time to recheck it. You'll see this before you book your trip.

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Some airports have Security Checks while entering the Departure Gate. So once you pass through airport security, you might have to do that again before boarding as well (depends on the airport). There is no other Airport Security check once you are already in the terminal, finding Boarding Gate.

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Do You Have To Go Through Customs During A Layover? Customs and immigration are usually required at the connecting airport for international flights. You don't always have to for domestic flights. In most cases, passengers on layover flights must clear customs and immigration at the first point of entry.

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Even if you don't need to go through immigration, you will most likely have to go through security before you board your next flight. This is nothing to worry about, just make sure that you finish and throw away that bottle of water you took off the plane before going through security again - no liquids over 100ml!

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International flights require longer connections as you will often have to go through immigration and customs upon arrival. For international layover flights booked on one airline, two hours is often recommended to make your connection.

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If you're connecting from a domestic flight, then you won't need to clear customs and immigration, and you can remain airside to connect to your next terminal, unless you're flying from Terminal E where no airside connections are available.

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These terminals are connected airside, meaning you can transfer between them without having to enter security again. To do this, use the walkways: TBIT and Terminal 4 are connected by a walkway. Terminals 4 through 6 are connected by tunnels near the terminal center.

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Flight Connections at JFK
For all domestic-to-domestic and domestic-to-international flight connections from a different terminal, you'll need to exit the terminal and re-clear security. If you've booked 2 flights on 1 reservation, then double-check any checked luggage is tagged through to your final destination.

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When arriving at the connecting airport all you have to do is to go to your next gate and wait for the next plane, your next flight. There might be a security check in the terminal at the connecting airport. But mostly you don't have to do anything about your luggage. It's being taken care of by the airport personnel.

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  1. If your booking consists of more than one airline reservation code, a self-transfer may be required.
  2. This indicates that you are solely responsible for navigating your connections between flights.


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While these terms are often used interchangeably, they are not the same thing. A layover is the time you spend at the airport between two flights. A connecting flight is the next flight in your itinerary that you're waiting at the airport to take.

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There is no one-size-fits-all answer here, it can vary greatly from one airport to another. Some international airports have a minimum connecting time as low as 30 minutes. But usually, when traveling internationally, the MCT is at least an hour. It can go up to 2 hours in large airports requiring a change of terminal.

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What is a good connection time? Travel advisers say there's a lot to take into account when booking connecting flights, but a general rule of thumb is 60-90 minutes between domestic flights and at least two to three hours for international itineraries.

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Atlanta has a domestic and international terminal with concourses A to F and T. To help you make your connection, once you arrive you will need to clear immigration, collect your bags, check in with the next airline, clear security and head back to the departure area.

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In the event that you missed a connection or got held up in security and your checked luggage has gone ahead without you, immediately track down an airline representative. The carrier may be able to track your bags and hold them for you until your arrival.

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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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Travel advisers say there's a lot to take into account when booking connecting flights, but a general rule of thumb is 60-90 minutes between domestic flights and at least two to three hours for international itineraries.

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Allowing yourself at least a 60-minute layover for domestic flights and a two-hour layover time for international flights can often be a much more comfortable and stress-free journey than booking a flight with a very tight connection.

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In a passenger context, MCT is defined as the shortest time interval required in order to transfer a passenger and his luggage from one flight to a connecting flight, in a specific location or metropolitan area.

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When layover flights are booked with the same airline, your baggage will be automatically transferred through to your final destination. However, if the two flights are with different airlines, you may have to claim and re-check your baggage during your layover.

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