Do Connecting Flights Require Going Through Customs Again?

Post originally Published April 12, 2024 || Last Updated April 13, 2024

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Do Connecting Flights Require Going Through Customs Again? - Understanding Customs and Immigration Requirements for Connecting Flights


Do Connecting Flights Require Going Through Customs Again?

For itineraries between the U.S. and another country, you'll clear customs and immigration at your first port of entry. For example, flying from Paris to New York to LA, you'll go through customs in New York. Your onward flight to LA is domestic, so no additional clearance needed.

For connections between two international destinations, like London to New York to São Paulo, customs procedures vary. Some airports have sterile transit areas where you won't need to re-clear customs before your next flight. But in other cases, you will need to collect luggage, go through customs, and check-in again at your connection. Always check airport requirements.

What else is in this post?

  1. Do Connecting Flights Require Going Through Customs Again? - Understanding Customs and Immigration Requirements for Connecting Flights
  2. Do Connecting Flights Require Going Through Customs Again? - Layover vs. Connecting Flight: Navigating the Difference
  3. Do Connecting Flights Require Going Through Customs Again? - Strategies for a Smooth Customs Experience During Connections
  4. Do Connecting Flights Require Going Through Customs Again? - International to Domestic Connections: Clearing Customs Before Your Final Destination

Do Connecting Flights Require Going Through Customs Again? - Layover vs. Connecting Flight: Navigating the Difference


A layover is when your itinerary includes an extended stopover in a city between flight segments. For example, flying from New York to Bangkok with an 8 hour layover in Hong Kong. Layovers allow you to briefly explore a new destination without booking a separate flight.
With a connecting flight, your stop in another city is shorter - usually under 4 hours. You'll remain in a secure transit area of the airport without going through immigration or customs. Connecting flights are meant for continuing your journey, not sightseeing.
The main advantages of a layover are the ability to stretch your legs, get out of the airport, and see a new place. Layovers do require going through security and immigration controls again. Luggage may need to be collected and rechecked.

Connecting flights are more straightforward logistically, with less time spent in transit. But you won't leave the airport. If you have a very tight connection, the airline may transfer your bags automatically.

Do Connecting Flights Require Going Through Customs Again? - Strategies for a Smooth Customs Experience During Connections


When navigating connections with customs and immigration, having a game plan can make all the difference. The key is to be proactive and understand the airport's policies ahead of time.

First and foremost, always check your airline and airport's website for any updates on customs and immigration procedures. Some airports have dedicated transit areas where you can simply proceed to your connecting gate without additional screening. Others may require you to collect your bags, clear customs, and re-check in. Knowing the protocol can save you a lot of stress and time.
If your itinerary involves an international connection, be sure to pack essentials in your carry-on. That way, if you do need to go through customs, you can quickly retrieve your belongings and avoid the hassle of waiting for checked luggage. Travel light whenever possible - the fewer bags to manage, the better.
When arriving at your connection airport, make a beeline for the signs directing you to the customs and immigration hall. Don't get sidetracked by shopping or dining opportunities, as tempting as they may be. Time is of the essence, especially if you have a tight connection.
Once in the customs line, have your passport and any required documents ready to go. Many airports now offer automated kiosks, which can significantly speed up the process. Just follow the instructions carefully and be prepared to provide fingerprints or a facial scan.
If you have a longer layover, consider applying for a Trusted Traveler program like Global Entry or TSA PreCheck. The upfront investment can pay dividends by getting you through customs and security more quickly on future trips. Just be sure to factor in time to navigate to your departure gate after clearing customs.

Do Connecting Flights Require Going Through Customs Again? - International to Domestic Connections: Clearing Customs Before Your Final Destination


When you're traveling with a connecting flight, the process of clearing customs can be a bit different depending on whether your final destination is international or domestic. If you have an international-to-domestic connection, it's important to understand the customs requirements to ensure a smooth travel experience.
One of the key things to keep in mind is that for international-to-domestic connections, you'll typically need to clear customs and immigration at your first point of entry into the country, rather than at your final domestic destination. This means that if your flight originates overseas and has a connection within the same country, you'll need to go through customs and immigration at the airport where you first land, not at your final domestic airport.
For example, if you're flying from London to New York with a connection in Chicago, you'll need to go through customs and immigration in Chicago, not New York. This is because Chicago is considered your first point of entry into the United States. Once you've cleared customs there, you can proceed to your gate for your domestic flight to New York without having to go through additional security or customs checks.
It's important to be aware of this process, as it can impact the time you'll need to allocate for your connection. Clearing customs and immigration can take some time, so you'll want to make sure you have enough time between your arriving international flight and your departing domestic flight to get through the process without missing your connection.
Some airports are better equipped to handle these types of connections than others. Larger international hubs like Chicago O'Hare, JFK in New York, or Los Angeles International often have dedicated customs and immigration facilities for connecting passengers, which can help streamline the process. However, smaller regional airports may have more limited resources, so it's important to research your specific connecting airport and build in extra time if needed.
Additionally, if you're traveling with checked luggage, you'll need to collect your bags after clearing customs and then re-check them before your domestic flight. This is another step to factor into your connection time.

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