Do you go through customs before check in?

In most cases, you'll go through customs and immigration after your flight first arrives in a new country, but there are exceptions. For example, some countries have mutual agreements intended to help speed travelers through the process, so you may go through customs and immigration before you board.



In 2026, the standard procedure for international air travel is that you do not go through customs before checking in for your departure. Customs is primarily an arrival process where your baggage is inspected for restricted items and duties are assessed by the destination country. When departing, you first check in with your airline to drop off bags and receive a boarding pass, then proceed through Security and Immigration (Passport Control). However, there are high-value exceptions: at certain "Preclearance" airports (like those in Canada, Ireland, or the UAE for U.S.-bound flights), you actually clear U.S. Customs and Immigration after check-in but before boarding the plane. This allows you to land in the U.S. as a domestic passenger. For most other global routes, you will only interact with Customs agents after landing at your final destination and reclaiming your checked luggage.

People Also Ask

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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  • Check-in for your flight.
  • Hand over any luggage that would need to go into the aircraft hold, if you are travelling with luggage.
  • Pass through the airport security gates to the departures hall.
  • Find your boarding gate.
  • Board the plane and fly to your destination.


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Baggage claim is usually after customs when a person arrives from an international flight at an airport. This is because customs is responsible for inspecting the items that you are bringing into the country, and they need to do this before you can collect your luggage.

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Three Ways to Check In
  1. Passport (when traveling internationally)
  2. Flight information. Paper ticket (less and less common), OR. E-ticket with a confirmation number—usually sent via email if ticket is purchased online or through a travel agency, OR. Printed itinerary with a confirmation number.


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It's really hard to put an exact number on how long you need for your layover. At a minimum, I'd say you should plan for one hour for domestic layovers and two hours for international layovers. But this is not a hard, fast rule! If you have to go through security again on a domestic layover, you might need more time.

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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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Usually, when you land in the US from a foreign country, you go through a customs inspection in the first US city you land in. However, if you're flying from one of 14 designated airports with preclearance facilities offered by Customs and Border Protection, or CBP, you clear customs before you fly.

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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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The US has preclearance facilities in six countries
  • Ireland: Dublin Airport (DUB) and Shannon Airport (SNN)
  • Aruba: Queen Beatrix International Airport (AUA)
  • Bermuda: L.F. Wade International Airport (BDA)
  • Bahamas: Lynden Pindling International Airport (NAS)
  • United Arab Emirates: Abu Dhabi International Airport (AUH)


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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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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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Yes, because you have to get your checked bag(if you checked any), then you have to go through customs as you came from a different Country(must go through customs even if you didn't check bags), then you re check you bags ( if you originally checked bags), then you have to go through security again.

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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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Usually, you go through customs when you exit the airport at your final destination. However, if you have a layover in a different city in your destination country, you may need to go through customs before your connecting flight.

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The General Guideline for How Early You Should Get to the Airport. Generally speaking, most airlines advise that you arrive at the airport at least 2 hours prior to a domestic flight, and at least 3 hours prior to an international flight.

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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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There are many factors that impact how long it may take travelers to complete the immigration and CBP process, but it is rare for it to take more than two hours. Passengers connecting to another location must recheck their luggage.

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Online check-in makes the most sense when you do not want to spend a lot of time waiting at the airport. Especially people who are only traveling with hand luggage can save a lot of time this way.

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If you don't check in, you won't receive a boarding pass that allows you to board the plane, and your seat might be given up to a standby passenger. The check-in process also confirms your traveler details like your passport information and frequent flyer number.

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Yes. TSA PreCheck® is available when you depart from a U.S. airport to a foreign country, and for domestic, connecting flights after you return to the United States. If you travel internationally four or more times a year, consider enrolling in Global Entry instead of TSA PreCheck®.

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