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Flight time from London to Bangkok

About 12 hours and 5 minutes non-stop, 9,577 km (5,951 miles), with your local arrival time and the time difference.

Estimated flight time12h 5mnon-stop
Distance9,577 km5,951 miles · 5,171 nm
Time difference+7hBangkok vs London
Local time now12:54 / 19:54London / Bangkok

Estimate for a direct flight from London (LHR, Heathrow) to Bangkok (BKK, Suvarnabhumi). Change the departure time below to see your local arrival time.

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How long is the flight from London to Bangkok?

A non-stop flight from London to Bangkok takes about 12 hours and 5 minutes. The two cities are 9,577 km (5,951 miles) apart in a straight line, measured between Heathrow (LHR) and Suvarnabhumi (BKK).

This is a long-haul route. If there is no direct flight on your dates, a connection through a hub usually adds 2–6 hours to the journey.

The estimate assumes an average speed of about 830 km/h plus around 35 minutes for taxiing, take-off and landing. Real schedules vary with the airline, aircraft, route and winds – heading east with the jet stream, flights are often a little quicker than this. Check your booking for the exact time.

Time difference and arrival time

Bangkok is 7 hours ahead of London right now. A flight leaving London at 10:00 local time lands at about 05:05 local time in Bangkok the next day. With a 7h shift, expect some jet lag: as a rough guide the body adjusts by about an hour a day, and flying east (as on this trip) is usually harder than the other way.

Why arrival times look strange

Airline schedules always show local times: departure in the departure city’s time and arrival in the arrival city’s time. Fly east and you “lose” hours – a 7-hour flight from New York to London leaving at 19:00 lands at 07:00 the next morning. Fly west and you gain them, which is how you can land in Los Angeles almost at the same clock time you left Tokyo. This calculator handles the time zones and daylight saving time for you.

How the flight time estimate works

In estimate mode the calculator measures the great-circle distance between the two cities – the shortest route over the Earth’s surface – and assumes an average speed of about 830 km/h (515 mph), plus around 35 minutes for taxiing, take-off and landing. That gives a good guide for a non-stop flight. Real schedules vary with the airline, aircraft, winds and route: flights heading east with the jet stream are often quicker than the same trip heading west, so always check your booking for the exact time.

Frequently asked questions

How long is the flight from London to Bangkok?

A direct flight from London to Bangkok takes about 12 hours and 5 minutes. This is an estimate based on the distance; airline schedules can be shorter or longer depending on the route and winds.

How far is Bangkok from London?

The straight-line (great-circle) distance between London and Bangkok is about 9,577 km, or 5,951 miles.

What is the time difference between London and Bangkok?

Bangkok is 7 hours ahead of London at the moment.

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