Cheap flights from London Heathrow Airport to Bangkok from £292

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
11 May — 18 May1
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 Tuesday or Monday 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 11 April 2026.

Sun 1/1121:10
LHR
-
BKK
1 stop38h 20m
Shenzhen Airlines
Sun 29/1103:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 7/4£427
Wed 13/522:40
LHR
-
BKK
1 stop37h 40m
Air China
Wed 27/519:35
BKK
-
LHR
1 stop30h 50m
Air China
Deal found 6/4£428
Wed 3/622:00
LHR
-
BKK
1 stop30h 00m
Hainan Airlines
Thu 11/611:05
BKK
-
LHR
2 stops38h 25m
Hainan Airlines
Deal found 6/4£428
Thu 7/522:00
LHR
-
BKK
1 stop37h 05m
Air China
Wed 13/519:35
BKK
-
LHR
1 stop28h 05m
Air China
Deal found 6/4£429
Sun 7/622:05
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Fri 19/603:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 6/4£430
Mon 8/609:30
LHR
-
DMK
2 stops19h 30m
Multiple Airlines
Tue 16/616:35
DMK
-
LHR
2 stops26h 10m
Multiple Airlines
Deal found 7/4£431
Mon 25/522:05
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Tue 23/603:15
BKK
-
LHR
1 stop22h 45m
Shenzhen Airlines
Deal found 7/4£431
Sat 19/916:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Fri 25/901:50
BKK
-
LHR
1 stop16h 50m
SAUDIA
Deal found 8/4£431
Wed 29/422:00
LHR
-
BKK
1 stop30h 00m
Hainan Airlines
Tue 27/1019:10
BKK
-
LHR
1 stop28h 10m
Hainan Airlines
Deal found 6/4£432
Sat 7/1121:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Thu 19/1119:30
BKK
-
LHR
1 stop30h 40m
Shenzhen Airlines
Deal found 10/4£433
Fri 1/522:00
LHR
-
BKK
2 stops30h 00m
Hainan Airlines
Thu 14/511:05
BKK
-
LHR
2 stops38h 25m
Hainan Airlines
Deal found 6/4£434
Sun 7/622:05
LHR
-
BKK
1 stop38h 10m
Shenzhen Airlines
Sun 14/612:10
BKK
-
LHR
1 stop37h 40m
Shenzhen Airlines
Deal found 7/4£434

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 11 April 2026.

Round-trip from

£428

One-way from

£292

Popular in

July

Cheapest in

May

Average price

£670
Air China
  • Air China
  • 13/5-27/5
  • 2 total stops
  • 68h 30m total
  • London to Bangkok
Hainan Airlines
  • Hainan Airlines
  • 18/5
  • 2 total stops
  • 30h 00m total
  • London to Bangkok
Highest demand for flights based on searches. 9% potential increase in price (£53 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£14 potential savings vs. average return price).
Average for round-trip flights in April 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 11 April 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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 10/5

22:10-00:05

1 stop19h 55m

Bangkok Suvarnabhumi

Wed 13/5

01:50-12:40

1 stop16h 50m

£553
Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 6/7

09:30-06:15

1 stop14h 45m

Bangkok Suvarnabhumi

Tue 4/8

09:45-18:45

1 stop15h 00m

£631

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 12/5

21:20-14:55

2 stops35h 35m

Bangkok Suvarnabhumi

Wed 3/6

13:35-18:40

1 stop35h 05m

£699

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Wed 22/4

15:25-08:15

2 stops34h 50m

Bangkok Don Mueang Intl

Wed 29/4

11:50-13:55

2 stops32h 05m

£727

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 25/5

08:55-09:50

2 stops18h 55m

Bangkok Suvarnabhumi

Mon 8/6

12:50-07:55

1 stop25h 05m

£757

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Sun 17/5

15:30-08:15

2 stops34h 45m

Bangkok Don Mueang Intl

Thu 28/5

13:45-07:35

2 stops23h 50m

£759

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Mon 27/4

09:05-12:40

2 stops21h 35m

Bangkok Don Mueang Intl

Sun 3/5

09:15-07:35

2 stops28h 20m

£762

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Sat 6/6

21:45-08:15

2 stops28h 30m

Bangkok Don Mueang Intl

Thu 11/6

11:50-07:35

2 stops25h 45m

£770

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 16/9

21:20-12:20

2 stops33h 00m

Bangkok Suvarnabhumi

Wed 7/10

03:00-18:40

2 stops45h 40m

£779

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 10/6

08:55-01:10

2 stops34h 15m

Bangkok Suvarnabhumi

Fri 19/6

15:55-18:40

2 stops32h 45m

£779

Flights are sorted by cheapest return flights first.

Deals found on 10/4

Showing 1-10 of 45 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?

Use this chart to determine the optimal time to book a return flight from Heathrow to Bangkok. Price data was last updated on 9 April 2026.

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 85 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £378). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £530). 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 11 April 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 11 April 2026.

The most flights from LHR to TH1 are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 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 89 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 11 April 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.

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

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

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

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

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

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

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

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

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

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

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Overall

8.5

Crew

8.7

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 £631, SAUDIA can have you in Bangkok from London Heathrow Airport in 14h 45m. Airlines will cover a distance of 5947 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 £214. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and Shenzhen Airlines, with the lowest prices starting at £283 and £333, 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 £241 on Shenzhen Airlines. Other airlines that offer cheap prices include Hainan Airlines from £254 and China Eastern from £267 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 (75%), Air Canada (70%), EVA Air( 70%).

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

    On average you can expect to pay £2,418 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £473 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £424.

  • 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?

    Etihad Towers, Emirates Park Zoo, and Emirates Palace are currently the most popular points of interest in Abu Dhabi at the moment. Etihad Towers, Emirates Park Zoo, and Emirates Palace can be accessed by travelling approximately 20.8 mi, 7.9 mi, and 21.1 mi, respectively from Abu Dhabi Zayed Intl. Travellers in need of a car in Abu Dhabi can hire one for about £15 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £378). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £530). 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 11 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£214Average£556FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Scandinavian AirlinesCheapest£283Average£681FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
ITA AirwaysCheapest£365Average£532FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Turkish AirlinesCheapest£383Average£654FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Royal JordanianCheapest£408Average£726FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£449Average£721FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£465Average£718FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£503Average£688FlexibilityNo cancel feeOn-time75%
Search KLM flights
IndiGoCheapest£505Average£618FlexibilityNo cancel feeOn-time80%
Search IndiGo flights
Air FranceCheapest£508Average£774FlexibilityNo 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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