Where does immigration happen for connecting flights in US?

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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You will need to reclear TSA security once you arrive in your departure terminal. For international arriving passengers, you must claim all checked bags at Customs and recheck with your departing airline, even if the bags are checked to your final destination!

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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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When checking in your luggage in most cases it will be checked through to your last stop. 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.

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Connecting flights offer a one-stop service from nearly anywhere to anywhere else in the world. These flight connections are often required when the place you plan to reach is not close to a large airport or the town is not big enough to maintain a big airport.

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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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For a trip that includes one or more connections: We'll check your bags to your final destination and apply the charge for checking a bag from your origin to your destination. For a trip that includes a voluntary stopover: We'll check your bags to your stopover point, where you'll collect your bags.

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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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The port of entry is where you officially enter the United States. You will pass through a US immigration checkpoint shortly after you exit the plane. Make sure you have all your required papers in order and ready to show to the CBP agent in the airport when the time comes.

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Flight Connections at LAX
If you're arriving on an international flight, you will need to clear immigration at your arrival terminal. You will then need to collect your bag and clear customs — if the bag has been tagged with a final destination, you can drop it off at the transfers service desk after customs.

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Allow enough time: Customs can be time-consuming, especially during peak travel periods. Make sure you allow enough time to clear customs and get to your connecting flight. As a general rule, it's best to allow at least two hours for international layovers.

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For international layover flights booked on one airline, two hours is often recommended to make your connection. For international flights on different airlines, the connection time will need to be even greater as you may have to change terminals between the two flights.

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Everyone who arrives in the United States is processed by U.S. Customs and Border Protection, even if you are taking a connecting flight that is leaving the United States. You must have a visa or be eligible for the Visa Waiver Program to transit the USA .

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For international layover flights, you will normally have to go through customs and immigration at the connecting airport. For flights with a layover in Canada or the USA, you will need to go through immigration and fill out the necessary customs paperwork even if you are not staying in the country.

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The time between connecting flights can be pretty short – as little as 40 minutes for some airports. The airline is aware of your connection and will sometimes tell you which gate you need for your next flight. They might even offer assistance if you have a short connection time.

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The recommended layover time for domestic flights is normally one hour. However, as previously stated, you may require longer if your flights are booked with two different airlines, if you are traveling to a very busy airport or if you require special assistance.

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