Do I have to go through security again after customs?

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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Most (but again, not all) airports connect international terminals airside. When you're connecting from an international flight to a domestic one, you'll always have to exit and reenter security as you'll need to go through customs and immigration (unless you have gone through preclearance aboard, which is rare).

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If you're flying internationally, you may need to go through a second security screening before your flight: immigration. All you'll need to do here is show your passport and follow the instructions from the immigration staff. This is the last step before you can walk to your gate for your flight.

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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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Shipment Release After Customs inspects and assesses the goods, they are released from the warehouse where they have been held. The release process can vary depending on the type of imported goods but typically involves paying any customs duties or taxes owed.

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You'll go through customs and immigration both ways on an international trip—when you arrive in the foreign country you're visiting, and again when you return to your home country from abroad.

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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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International Connections
If your connecting flight is in Terminals 1, 2 or 3, you can take the free, 24-hour Airport Transit System (ATS). All connecting passengers must go through Transportation Security Administration (TSA) security screening.

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When you have a connecting flight, you usually have to go through security again because you are entering a new area of the airport that may have different security measures. Each airport has its own security protocols and checkpoints, and these may vary depending on the destination, airline, and type of flight.

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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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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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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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You might have to go through customs during a layover, especially if your layover is in the Schengen Area (which consists of most countries in the EU). For example, if your final destination is Paris, France, but you have a layover in Madrid, Spain, you will actually go through customs in Spain, not France.

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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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While on your flight, your flight attendant will distribute a Customs Declaration Form. Most forms ask the point of exit and entry of your flight, your flight number, and what goods you may be bringing into the country (forms might list prohibited items for the respective country).

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You go through Customs at your first stop in your final country. That is, you don't go through Customs as a layover in Heathrow, but when you first land in the USA, you go through Customs at JFK or Boston, even if you're continuing to Chicago or St. Louis.

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Trusted Traveler Program Enrollment
Global Entry is a U.S. Customs and Border Protection (CBP) program that allows expedited clearance for pre-approved, low-risk travelers upon arrival in the United States. Members enter the United States through automatic kiosks at select airports.

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