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Flights from London to Bangkok

Flights from London to Bangkok take about 12h 30m nonstop, and the two cities are about 9,580 km apart. Compare live prices for your dates below.

Cheapest recent fare

£358

Round trip · 25 Nov – 16 Dec · 1 stop

Search these dates

Found in the last few days, per person, economy. The provider confirms the final price.

Approx. flying time
About 12h 30m
Best time to visit Bangkok
November to February (cooler and drier)

Flight tip: Cover shoulders and knees when visiting temples. Read our Bangkok guide

London to Bangkok flights: quick answers

How long is the flight from London to Bangkok?

It’s about 12h 30m nonstop. That’s a rough guide worked out from the 9,580 km between Heathrow and BKK; scheduled times vary by airline and direction, because winds can make one way slower, and a flight with a connection takes longer.

How long is the flight back from Bangkok to London?

About the same time in the air, roughly 12h 30m, because the distance is the same. High-altitude winds usually make one direction faster than the other, so check the scheduled times in your search results.

How far is Bangkok from London?

About 9,580 km (5,950 miles) between Heathrow and BKK, in a straight line. The path a plane flies is usually a little longer.

What is the time difference between London and Bangkok?

Bangkok is 7 hours ahead of London right now; at other times of year it’s 6 hours ahead, because of daylight saving time.

Which airports can I fly from in London?

Heathrow and Gatwick handle most long-haul flights; Stansted, Luton, London City and Southend serve mainly European routes.

Which airport do I fly into in Bangkok?

Suvarnabhumi (BKK) is Bangkok’s main airport. Other airports and when to go: our Bangkok guide

When is the best time to visit Bangkok?

November to February (cooler and drier).

What are my rights if my London to Bangkok flight is cancelled?

Flights leaving a UK airport are covered by UK rules on any airline. If your flight is cancelled you can choose a refund or another flight, and you may be able to claim compensation if you were told less than 14 days before departure. Compensation depends on the flight’s distance. This route is in the over 3,500km band. UK Civil Aviation Authority: Cancellations (opens in a new tab)

What do I need to enter the country when I fly to Bangkok?

Rules change, so check them again shortly before you travel. GOV.UK: Thailand entry requirements (opens in a new tab)

Before you fly

Cheapest month to fly from London

  1. Nov 2026£281
  2. Dec 2026£263
  3. Jan 2027£261
  4. Feb 2027£273
  5. Mar 2027£260Cheapest month
  6. Apr 2027£286
  7. Jun 2027£307
  8. Sept 2027£309
  9. Oct 2027£318

Lowest round-trip fare per person found recently for departures in each month, from London. Months with no recent fare aren’t shown.

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