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How early should I get to Heathrow Terminal 3?

When to arrive. 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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When to arrive. 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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The peak times at London Heathrow Airport is from 10 AM to 1 PM, and 5 PM to 8 PM. Since London Heathrow Airport is the busiest airport in the UK, you'll find it jam-packed with passengers 24/7.

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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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On average, it takes between 30 minutes and 1 hour to clear customs and immigration at Heathrow Airport.

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Many flights from the United States arrive at Heathrow between 6:30 a.m. and 10 a.m. (local time) each day, so this is when you can expect long lines at immigration. Similarly, each Sunday from 5 p.m. onwards many Brits will be returning from weekends away so there will likely be long waits.

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Most airlines recommend arriving at the airport three hours before departure for international flights. It's common for international flights to start boarding earlier than domestic flights (the aircraft are often larger and have higher passenger capacities), which accounts for the earlier recommendation.

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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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Two to three hours is the minimum recommended time for an international layover, but more might be needed. Sally French is a travel rewards expert who joined NerdWallet in 2020. She previously wrote about travel and credit cards for The New York Times and its sibling site, Wirecutter.

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Brittraveller: As far as I'm aware Sunday is almost always the busiest day of the week at Heathrow, particularly in summer.

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Terminal 3 is used by the majority of the members of the Oneworld airline alliance: American Airlines, Cathay Pacific, Finnair, Iberia, Japan Airlines, Qantas, Royal Jordanian, and SriLankan Airlines. British Airways, which mainly uses Terminal 5, also offers some flights from this terminal.

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Heathrow's rush hours are 7am to 10am and 5pm to 8pm on weekdays, with particularly dense traffic on Friday evenings and the first day of any school holiday.

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In most cases, you will only need to go to check-in when you have checked-in online if you need to drop off an item of hold baggage. Please ensure that you are aware of the hand baggage requirements for your specific airline before you travel.

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At Heathrow you can check in at the airline check-in desks or use the self-service check-in consoles. Some people check in online before they leave home. If you have baggage which you need to check in, you will drop it off here. A boarding pass is a document that entitles a passenger to a seat on their aircraft.

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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.

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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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The TSA advises arriving at the airport two hours before your flight for domestic travel and three hours before for international travel.

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The recommended layover time for international flights is generally longer, as you will have to go through customs and immigration before boarding your next flight. In most cases, a 30-minute layover for domestic flights and an hour for international flights is considered a minimum, or short, layover.

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When to arrive. 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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Everyone who boards an aircraft at Heathrow has to be security screened to UK government standards. Even if you've already been through security checks at another airport, we're obliged to screen you again before you fly from Heathrow.

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You can walk between Terminals 2 and 3 via the pedestrian underpass. The route is well signposted and can be followed on our interactive Heathrow map. If you have an impairment or mobility difficulties, find out how to request assistance.

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