Cheap flights from London Heathrow Airport to Bangkok from £293

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
1 Nov — 8 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London Heathrow to Bangkok are usually found in May or June, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap 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 2 October 2025.

Round-trip from

£431

One-way from

£293

Popular in

December

Cheapest in

May

Average price

£649
Shenzhen Airlines
  • Shenzhen Airlines
  • 5/11-11/11
  • 2 total stops
  • 53h 55m total
  • London to Bangkok
Hainan Airlines
  • Hainan Airlines
  • 10/11
  • 2 total stops
  • 30h 05m total
  • London to Bangkok
Highest demand for flights based on searches. 5% potential increase in price (£28 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in October 2025

Find 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 2 October 2025.

Sun 16/1121:10LHR - BKK
1 stop31h 00mShenzhen Airlines
Sun 14/1212:10BKK - LHR
1 stop38h 00mShenzhen Airlines
Deal found 1/10£431
Thu 6/1122:00LHR - BKK
1 stop36h 05mChina Southern
Wed 3/1215:45BKK - LHR
1 stop33h 50mChina Southern
Deal found 30/9£432
Thu 20/1122:00LHR - BKK
1 stop31h 55mChina Southern
Mon 1/1218:05BKK - LHR
1 stop31h 30mChina Southern
Deal found 1/10£433
Fri 28/1121:10LHR - BKK
1 stop22h 05mShenzhen Airlines
Fri 5/1219:30BKK - LHR
1 stop30h 40mShenzhen Airlines
Deal found 30/9£433
Mon 1/1221:00LHR - BKK
1 stop30h 05mHainan Airlines
Sat 21/211:10BKK - LHR
1 stop37h 45mHainan Airlines
Deal found 30/9£434
Thu 27/1122:00LHR - BKK
1 stop29h 10mChina Southern
Sun 14/1208:20BKK - LHR
1 stop17h 15mChina Southern
Deal found 30/9£435
Wed 12/1121:10LHR - BKK
1 stop22h 05mShenzhen Airlines
Fri 28/1119:30BKK - LHR
1 stop30h 40mShenzhen Airlines
Deal found 30/9£436
Wed 5/1121:10LHR - BKK
1 stop22h 05mShenzhen Airlines
Thu 27/1103:15BKK - LHR
1 stop22h 55mShenzhen Airlines
Deal found 1/10£436
Fri 31/1021:00LHR - BKK
1 stop38h 05mHainan Airlines
Sat 15/1101:35BKK - LHR
1 stop23h 20mHainan Airlines
Deal found 30/9£437
Fri 31/1021:00LHR - BKK
1 stop38h 05mHainan Airlines
Sat 8/1111:10BKK - LHR
1 stop37h 45mHainan Airlines
Deal found 30/9£438
Fri 31/1021:10LHR - BKK
1 stop38h 20mShenzhen Airlines
Sat 8/1112:10BKK - LHR
1 stop38h 00mShenzhen Airlines
Deal found 1/10£439
Wed 1/1021:20LHR - BKK
1 stop22h 35mChina Eastern
Thu 9/1016:50BKK - LHR
1 stop31h 50mChina Eastern
Deal found 30/9£439

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 2 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Bangkok that are best for you.

Fly from

Heathrow

Fly to

Bangkok

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 14/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 30/11

12:10-19:10

1 stop38h 00m

£444

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 3/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Tue 18/11

12:10-19:10

1 stop38h 00m

£445

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 5/11

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Fri 21/11

12:10-19:10

1 stop38h 00m

£445

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 12/11

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sun 30/11

12:10-19:10

1 stop38h 00m

£445

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 10/2

14:50-12:20

1 stop14h 30m

Bangkok Suvarnabhumi

Wed 11/3

13:15-21:40

1 stop15h 25m

£508

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 14/3

20:30-19:35

1 stop16h 05m

Bangkok Suvarnabhumi

Tue 17/3

14:45-11:05

1 stop27h 20m

£512

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 4/12

13:55-23:20

1 stop26h 25m

Bangkok Suvarnabhumi

Mon 26/1

02:55-14:30

1 stop18h 35m

£545

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 14/3

13:55-23:20

1 stop26h 25m

Bangkok Suvarnabhumi

Mon 16/3

02:55-18:10

1 stop22h 15m

£551

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Fri 31/10

21:10-05:25

1 stop25h 15m

Bangkok Don Mueang Intl

Sat 8/11

22:00-17:55

2 stops26h 55m

£568

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 16/3

13:55-23:20

1 stop26h 25m

Bangkok Suvarnabhumi

Wed 25/3

14:40-12:05

1 stop28h 25m

£580

Flights are sorted by cheapest return flights first.

Deals found on 1/10

Showing 1-10 of 45 results
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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 26 September 2025.

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 64 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 £717). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £1,123). 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 2 October 2025.

It’s optimal to fly from London Heathrow Airport to Bangkok at midday. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from London Heathrow Airport to Bangkok?

Use this chart to determine the cheapest time to fly return from Heathrow to Bangkok. Price data was last updated on 28 September 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Bangkok flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 2 October 2025.

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).

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 2 October 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Bangkok, such as EVA Air, Thai Airways, andQatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.0

Overall

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

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 £444, Shenzhen Airlines can have you in Bangkok from London Heathrow Airport in 22h 05m. Airlines will cover a distance of 5947 mi.

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

    Flying on Shenzhen Airlines is currently your cheapest option to Bangkok, with prices starting at £335. Additional return tickets that might be worth considering are offered by SAUDIA and China Eastern, with the lowest prices starting at £336 and £366, respectively. Users have found that Shenzhen Airlines is 52% 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 £294 on Hainan Airlines. Other airlines that offer cheap prices include Shenzhen Airlines from £298 and Oman Air from £307 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: EVA Air (78%), Thai Airways (76%), Air Canada( 69%).

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

    On average you can expect to pay £2,674 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £446 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £385.

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

  • What are some popular points of interest to see during a stopover in Abu Dhabi?

    Etihad Towers, Sheikh Zayed Mosque, and Emirates Park Zoo are the most popular attractions in Abu Dhabi if you're in need of something to do during your stopover. Travellers on a stopover in Abu Dhabi can visit Etihad Towers, Sheikh Zayed Mosque, and Emirates Park Zoo, by travelling 20.8 mi, 11.2 mi, and 7.9 mi, respectively after landing at Abu Dhabi Zayed Intl. Those on a stopover in Abu Dhabi in need of a car hire can book one at Abu Dhabi Zayed Intl for about £18.

  • What are points of interest worth seeing during a stopover in Beijing?

    Summer Palace, Forbidden City, and The Antiquarium of the Palace Museum are currently the most popular points of interest in Beijing. Summer Palace, Forbidden City, and The Antiquarium of the Palace Museum can be visited by travelling about 17.3 mi, 15.1 mi, and 14.9 mi respectively from Beijing Capital.

  • 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 £717). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £1,123). 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 2 October 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest£336Average£561FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Hainan AirlinesCheapest£377Average£429FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Norse Atlantic UKCheapest£454Average£559FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal Brunei AirlinesCheapest£467Average£534FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
LufthansaCheapest£474Average£814FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£484Average£717FlexibilityNo cancel feeOn-time75%
Search KLM flights
SWISSCheapest£485Average£655FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Air FranceCheapest£490Average£731FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£505Average£618FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
FinnairCheapest£529Average£852FlexibilityNo cancel feeOn-time76%
Search Finnair 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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