When should we check-in for international flight?

When you're traveling outside of the United States, we suggest arriving at least 3 hours prior to your departure. You must be checked in at least 1 hour before your scheduled departure. Additionally, we recommend being at the gate and ready to board 45 minutes before your scheduled departure time.



For an international flight in 2026, the standard "gold rule" is to arrive at the airport and be checked in at least 3 hours before your scheduled departure. While this may seem excessive, it provides a vital buffer for the multi-layered process of document verification (passports and visas), baggage drop, and potentially longer security and immigration queues. Many major hubs, such as London Heathrow, Dubai, or Singapore Changi, now use advanced biometric scanners, but these can still experience congestion during peak travel waves. If you have checked in online and only have carry-on luggage, you might be able to squeeze this to 2 hours, but why risk the stress? For 2026 travel, it is also important to check if your specific airline has an early "bag drop" closure time—usually 60 to 75 minutes before the flight—because once that window closes, you may be denied boarding regardless of how much time is left on the clock.

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When you're traveling outside of the United States, we suggest arriving at least 3 hours prior to your departure. You must be checked in at least 1 hour before your scheduled departure. Additionally, we recommend being at the gate and ready to board 45 minutes before your scheduled departure time.

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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. That said, there are many factors to consider that will help you decide how much time you should budget for at the airport.

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When you're traveling outside of the United States, we suggest arriving at least 3 hours prior to your departure. You must be checked in at least 1 hour before your scheduled departure.

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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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What is the recommended layover time for international flights? 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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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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How it Works
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Checking in online is far more convenient than checking in at the airport. However, if you have to check in special luggage such as bulky goods or a pet, you should rather use the classic method.

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We recommend getting to the airport three hours before your flight if you're travelling internationally, or two hours if you're travelling domestically or to Europe.

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If you are wondering “do you go through customs when leaving the U.S.”, the answer is no. All countries have customs inspection procedures at borders and international airports. However, only passengers entering a country are subject to customs inspection.

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This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass. Further, international flights tend to begin their boarding process 15 to 30 minutes earlier than domestic flights due to the larger plane size.

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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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For an International flight, you will need to undergo Customs and Immigration checks. Ensure you have all the necessary travel documents (Passport and VISA) and state the reason for your travel to the officials if asked. Ensure that you do not carry any contraband items which are against the law.

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Travelers cannot upgrade from TSA PreCheck to Global Entry
A main reason is that the programs have distinct purposes. TSA PreCheck can help travelers pass through airport security checkpoints. Meanwhile, Global Entry is specifically for travelers arriving in the United States from another country.

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If you mostly travel domestically and want access to expedited security screening, TSA PreCheck may make sense for you. If you travel internationally and want access to faster customs screening upon reentry to the U.S., consider Global Entry, which includes TSA PreCheck, instead.

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Check-in times You can check in online or from the app starting 24 hours before and up to 45 minutes before your flight (90 for international). To check bags or check in at the airport, you must be there a certain amount of time before scheduled departure: Within the U.S. – 45 minutes.

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With a $78 one-time fee, you pay about $15.50 per year over five years. What do you get for your money? Shorter wait times. In May 2023, 89% of TSA PreCheck passengers waited less than five minutes in security lines, according to the TSA.

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When you're traveling outside of the United States, we suggest arriving at least 3 hours prior to your departure. You must be checked in at least 1 hour before your scheduled departure. Additionally, we recommend being at the gate and ready to board 45 minutes before your scheduled departure time.

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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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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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