London Heathrow Airport
Minimum connection times: allow at least 60 minutes for connections within the same terminal, and at least 90 minutes for connections that require travel between terminals. You'll need to allow extra time if you need to collect your bags and go through security.
CONNECTING FLIGHTS
If your baggage is checked through to your final destination, that's where you clear customs. If you're collecting your baggage and checking in to your next flight yourself, you need to pass through customs at Heathrow.
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We recommend that you allow the following minimum connection times: 1 hour for connections within the same Heathrow terminal. 1 hour 30 minutes for connections that require travel between terminals at Heathrow.
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How long does it take to clear customs at Heathrow? On average, it takes between 30 minutes and 1 hour to clear customs and immigration at Heathrow Airport.
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Overall, passengers usually have to re-clear security for connecting flights, though there may be some exceptions depending on the airport and flight itinerary. To make this process easier, checking with the airline or airport ahead of time is recommended.
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Normally, you will need to arrive at the airport at least 90 minutes prior to your scheduled departure time if you have baggage to check for an international flight. In the case of major carriers like British Airways, the long-haul flight bag drop closes 60 minutes prior to departure.
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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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If the missed connection is the airline's fault (a delayed initial flight due to mechanical problems, for example), the airline should rebook you on the next available flight. If the next outbound flight is the following morning, the airline should either book you on another airline or provide accommodations and meals.
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Upwards of 1500 people trying to clear immigration and more flights arriving each minute. Best you can hope for is about 20 minutes, but with recent staffing issues as long as 5 hours. Can I transfer from London Heathrow Terminal 2 to Terminal 5 without going through immigration?
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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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That way if you are delayed, you don't need to worry about making your next flight. If you can't avoid connecting, don't book the shortest layover, because you'll be building in stress and the possibility of missing your flight. A one-hour layover is not enough anymore. Thirty minutes, not a chance.
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Generally speaking, most airlines will make some kind of efforts to wait for delayed passengers on a connecting flight, though this is not necessarily guaranteed. In some cases, airlines may be able to hold a connecting flight for a period of time, but it is not something that is typically guaranteed by any airline.
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You will need to go through passport control (and customs if applicable) and then check in again as normal for your connecting flight, so please ensure you have enough time.
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In a passenger context, MCT is defined as the shortest time interval required in order to transfer a passenger and his luggage from one flight to a connecting flight, in a specific location or metropolitan area.
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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.
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You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.
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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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If you checked a bag, you'll have to collect it from baggage claim from the international flight. You'll need to clear customs and immigration. Next, you'll recheck your luggage for the domestic flight.
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