The flight time from London Heathrow Airport to Bangkok, Thailand is:

12 hours, 23 minutes

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Flight map from LHR to Bangkok, Thailand

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Flying time from LHR to Bangkok, Thailand

The total flight duration from LHR to Bangkok, Thailand is 12 hours, 23 minutes.

This assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/h or 434 knots. It also adds an extra 30 minutes for take-off and landing. Your exact time may vary depending on wind speeds.

If you're planning a trip, remember to add more time for the plane to taxi between the gate and the airport runway. This measurement is only for the actual flying time. You should also factor in airport wait times and possible equipment or weather delays. If you're trying to figure out what time you'll arrive at the destination, you may want to see if there's a time difference between LHR and Bangkok, Thailand.

The calculation of flight time is based on the straight line flight distance from LHR to Bangkok, Thailand ("as the crow flies"), which is about 5,945 miles or 9 567 kilometers.

Your trip begins at London Heathrow Airport in London, United Kingdom.
It ends in Bangkok, Thailand.

Your flight direction from LHR to Bangkok, Thailand is East (73 degrees from North).

The flight time calculator measures the average flight duration between points. It uses the great circle formula to compute the travel mileage.


find a flight to Bangkok, Thailand

London Heathrow Airport

IATA: LHR
ICAO: EGLL
City: London
Country: United Kingdom
Category: airports

Bangkok, Thailand

City: Bangkok
Region: Krung Thep
Country: Thailand
Category: cities

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Travelmath provides an online flight time calculator for all types of travel routes. You can enter airports, cities, states, countries, or zip codes to find the flying time between any two points. The database uses the great circle distance and the average airspeed of a commercial airliner to figure out how long a typical flight would take. Find your travel time to estimate the length of a flight between airports, or ask how long it takes to fly from one city to another.