The cheapest times to fly from LHR to BKK are

  • February 5th to March 25th
  • April 23rd to July 1st
  • September 24th to December 9th (except the weeks of October 1st and October 15th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from LHR to BKK is late May. Prices can be as high as $1077 for Saturday flights during mid December, or as low as $422 for Tuesday flights around late May.


When to Fly to Bangkok

Flying from London (LHR) to Bangkok (BKK) will usually cost between $424 to $778 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late May with an average ticket price of $444. Due to high demand the most expensive time to fly is mid December, with an average price of $838. Planning your trip to low-cost times can easily save you $394 on economy flights and even more on first-class flights. Generally, any price below $529 can be considered a good price for a round-trip LHR to BKK flight.

See below for a graph of average weekly prices for the LHR to BKK route. All prices are for round-trip tickets in USD.

LHR to BKK Flight Prices

Compared to other flights, the LHR to BKK flight is cheaper than the average and costs less than the average flight leaving from London. The average price per mile (for a direct flight) is $0.06, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Bangkok, and Fridays are the most expensive days to return to London. Selecting flights on the least expensive days could save you up to $68 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $529. Return trip prices are from the BKK to LHR flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from LHR to BKK can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 11 hour 41 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from LHR to BKK? We’ve got answers.

Which airlines fly this route?

You can find 65 major airlines flying this route most often: Aeroflot, Air Astana, Air China, Air France, Air India, Air New Zealand, Air Serbia, Alitalia, ANA, Asiana, Austrian, Bangkok Airways, Biman, British Airways, Brussels Airlines, Cambodia Angkor Air, Cathay Pacific, China Airlines, China Eastern, China Southern, EgyptAir, El Al, Emirates, Ethiopian, Etihad, Eurowings, EVA Air, Finnair, Firefly, Garuda Indonesia, Gulf Air, Hainan, Hong Kong Airlines, Iberia, IndiGo, JAL, Kenya Airways, KLM, Korean Air, Kuwait Airways, LOT, Lufthansa, Malaysia Airlines, Oman Air, Pakistan, Philippine Airlines, Qantas, Qatar Airways, Royal Brunei, Royal Jordanian, SAS, Shandong, Shenzhen, Sichuan Airlines, Singapore Airlines, SpiceJet, SriLankan, SWISS, THAI, Turkish Airlines, Ukraine International, Vietnam Airlines, Virgin Atlantic, Virgin Australia, Xiamen, and potentially more during busy seasons.

How far away is it from Suvarnabhumi International Airport to London Heathrow Airport?

The distance between the two airports is roughly 5950 miles or 9576 kilometers.

How long does it take to fly from LHR to BKK?

The real-world flight time for a nonstop LHR to BKK flight is about 11 hour 41 minutes.

How many flights go between London and Bangkok?

It depends on the day of the week and the date, but a typical day might have around 156 available flights from LHR to BKK.


Airport Location Info


Departing Airport

Origination code LHR
Origination airport name London Heathrow Airport
City London
Country the United Kingdom
Latitude 51.5
Longitude -0.5

Return Airport

Destination code BKK
Destination airport name Suvarnabhumi International Airport
City Bangkok
Country Thailand
Latitude 13.7
Longitude 100.7


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.