Cheap flights from London Heathrow Airport to Bangkok from £283

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
2 Jun — 9 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Bangkok are usually found in May or September, booked 85 days in advance, depart on a Monday or Tuesday and return on a Monday

Cheap flight deals from Heathrow to Bangkok

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Bangkok
Explore the most affordable flight options available from Heathrow to Bangkok. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 May 2026.

Mon 8/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sat 27/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 27/4£431
Mon 1/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 7/615:25
BKK
-
LHR
1 stop28h 50m
SAUDIA
Deal found 27/4£432
Sun 1/1121:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Thu 26/1112:10
BKK
-
LHR
1 stop38h 00m
Shenzhen Airlines
Deal found 28/4£432
Sat 6/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 25/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4£433
Mon 4/510:00
LHR
-
BKK
1 stop21h 45m
SAUDIA
Tue 26/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4£434
Thu 7/522:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Sun 24/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 28/4£434
Sat 13/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Wed 24/615:45
BKK
-
LHR
1 stop26h 55m
SAUDIA
Deal found 30/4£435
Sat 13/610:00
LHR
-
BKK
1 stop21h 45m
SAUDIA
Sat 20/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4£436
Sat 6/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 14/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/4£437
Tue 2/614:40
LHR
-
BKK
1 stop27h 25m
SAUDIA
Tue 16/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4£438
Sun 31/522:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Thu 18/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/4£439
Sun 27/919:50
LHR
-
DMK
1 stop18h 55m
Emirates
Tue 27/1022:55
DMK
-
LHR
1 stop19h 45m
Emirates
Deal found 1/5£661

Find flight deals from Heathrow to Bangkok

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Bangkok (TH1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 May 2026.

Round-trip from

£431

One-way from

£283

Popular in

July

Cheapest in

May

Average price

£589
SAUDIA
  • SAUDIA
  • 8/6-27/6
  • 2 total stops
  • 37h 35m total
  • London to Bangkok
SAUDIA
  • SAUDIA
  • 10/6
  • 1 total stop
  • 15h 30m total
  • London to Bangkok
Highest demand for flights based on searches. 8% potential increase in price (£50 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in May 2026

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Bangkok that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 May 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 18/5

21:45-19:15

1 stop15h 30m

Bangkok Suvarnabhumi

Thu 28/5

03:15-12:45

1 stop15h 30m

£577

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 24/5

09:30-06:45

1 stop15h 15m

Bangkok Suvarnabhumi

Fri 3/7

20:45-12:45

1 stop22h 00m

£582

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 20/8

21:45-23:50

1 stop20h 05m

Bangkok Suvarnabhumi

Mon 24/8

20:45-15:05

1 stop24h 20m

£714

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Mon 26/10

22:00-20:15

1 stop15h 15m

Bangkok Don Mueang Intl

Thu 5/11

22:55-11:40

1 stop19h 45m

£719

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Thu 1/10

22:15-20:45

1 stop16h 30m

Bangkok Don Mueang Intl

Tue 24/11

22:55-11:40

1 stop19h 45m

£720

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Wed 28/10

22:00-20:15

1 stop15h 15m

Bangkok Don Mueang Intl

Wed 11/11

22:55-11:40

1 stop19h 45m

£720

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Thu 29/10

20:20-20:15

1 stop16h 55m

Bangkok Don Mueang Intl

Mon 16/11

22:55-11:40

1 stop19h 45m

£721

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Thu 24/9

19:50-20:45

1 stop18h 55m

Bangkok Don Mueang Intl

Thu 8/10

23:50-12:25

1 stop18h 35m

£721

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Sun 25/10

15:50-20:15

1 stop21h 25m

Bangkok Don Mueang Intl

Tue 3/11

22:55-13:50

1 stop21h 55m

£722

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Mon 7/9

09:05-11:25

1 stop20h 20m

Bangkok Don Mueang Intl

Tue 6/10

23:50-14:25

1 stop20h 35m

£722

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 44 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Bangkok

How far ahead should I book a flight from London Heathrow Airport to Bangkok?

The price you pay for your flight from London Heathrow Airport to Bangkok may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from London Heathrow Airport to Bangkok?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £587). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £898). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to BKK?

Find hourly flight availability from Heathrow to Bangkok. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 May 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Bangkok as you normally would.

Weekly flight availability from London Heathrow Airport to Bangkok

Explore weekly flight availability from Heathrow to Bangkok. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 May 2026.

The most flights from LHR to TH1 are scheduled on a Friday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost for a return flight from London Heathrow Airport to Bangkok?

How often are flights from London to Bangkok delayed?

About 15% of weekly flights between London and Bangkok have experienced delays in the past year, with the average delay time being 85 minutes.

What is the most punctual flight time for London to Bangkok flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Bangkok flights?

Over the past year, EVA Air have had the lowest number of delays on this route, with just 8% of flights being delayed.

Reviews of airlines servicing Bangkok

Get insights into the airlines that provide service to Bangkok. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bangkok. Reviews last updated 3 May 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Bangkok, such as EVA Air,Oman Air, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Food

8.1

Overall

8.5

Boarding

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Bangkok. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from London Heathrow Airport to Bangkok?

    For as low as £719, Etihad Airways can have you in Bangkok from London Heathrow Airport in 15h 15m. Airlines will cover a distance of 5929 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Bangkok round-trip?

    Flying on Norse Atlantic UK is currently your cheapest option to Bangkok, with prices starting at £212. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and Shenzhen Airlines, with the lowest prices starting at £280 and £330, respectively. Users have found that Norse Atlantic UK is 69% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Bangkok one-way?

    One-way options have recently been found by users for as low as £238 on Shenzhen Airlines. Other airlines that offer cheap prices include Hainan Airlines from £251 and Singapore Airlines from £260 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Bangkok?

    Before booking your flight to Bangkok from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Thai Airways (78%), Air Canada (75%), EVA Air( 73%).

  • What are the cheapest flights from London Heathrow Airport to Bangkok?

    On average you can expect to pay £1,012 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £495 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £375.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Bangkok?

  • What are some popular things to do or see while on a stopover in Abu Dhabi?

    Emirates Palace, Yas Waterworld, and Ferrari World Abu Dhabi are currently the most popular points of interest in Abu Dhabi at the moment. Emirates Palace, Yas Waterworld, and Ferrari World Abu Dhabi can be accessed by travelling approximately 21.1 mi, 5.0 mi, and 4.5 mi, respectively from Abu Dhabi Zayed Intl. Travellers in need of a car in Abu Dhabi can hire one for about £13 per day.

  • Where are the least popular stopover locations for London Heathrow Airport to Bangkok flights?

  • Can I find deals for flights from Heathrow to Bangkok that include hotel bookings?

    Yes. In addition to deals on Heathrow to Bangkok flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Bangkok.

  • Can I find deals for business class flights from Heathrow to Bangkok?

    Yes. Cheapflights offers flight deals from Heathrow to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Bangkok?

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £587). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £898). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

  • What are the most eco-friendly airlines from Heathrow to Bangkok?

    There are a couple of options for flights from Heathrow to Bangkok for sustainable travel. Some great options to travel with are KLM, Finnair, Etihad, and Qatar Airways. If you fly with KLM, you will be flying with one of the most eco-friendly airlines in the world. KLM has a carbon emission reduction programme that has been helping the environment by reducing fuel, replacing fossil fuels, and offsetting Carbon Dioxide Emissions. Finnair is another great choice for eco-friendly travel. This airline has been making aircraft that are more fuel-efficient and use more bio-fuel in their planes. Qatar Airways allow passengers to contribute to the Carbon Offset Programme they have created. If you fly with Etihad, you will be flying with an airline that is in the process of making environmentally-friendly fuel so that they have zero carbon emissions by the year 2050.

  • How to fly more sustainably from Heathrow to Bangkok?

    There are many ways you can travel more sustainably when you fly. One of the best ways is to travel in Economy Class. The seats in this class take up less space, creating more room for more seats. The fewer trips a plane has to make, the better it is for the environment. Taking a direct flight or a flight with only one stopover is another great option, as it saves a ton of fuel. Packing a light bag makes the plane lighter. So if you have the option, don’t overpack to save fuel. Flying with an environmental airline is always recommended. So fly with KLM, Finnair, Etihad or Qatar Airways.

See more FAQs

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Top 10 airlines flying from Heathrow to Bangkok

Discover the top 10 airlines that operate flights from Heathrow to Bangkok. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£212Average£558FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Scandinavian AirlinesCheapest£280Average£632FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
ITA AirwaysCheapest£362Average£527FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Turkish AirlinesCheapest£379Average£668FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Royal JordanianCheapest£404Average£711FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£445Average£715FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£457Average£678FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£500Average£679FlexibilityNo cancel feeOn-time75%
Search KLM flights
IndiGoCheapest£500Average£612FlexibilityNo cancel feeOn-time80%
Search IndiGo flights
Air FranceCheapest£503Average£781FlexibilityNo cancel feeOn-time77%
Search Air France flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Bangkok?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Bangkok. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Bangkok?

Cheapflights helps you find that perfect flight to Bangkok from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Bangkok with no change fees?

Need flexible booking options for your flight to Bangkok from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Bangkok become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Bangkok flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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