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Cheap flights from London Heathrow Airport to Bangkok from £291

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
5 Jul — 12 Jul1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Bangkok are usually found in May or June, booked 81 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 30 June 2025.

Round-trip from

£455

One-way from

£291

Popular in

December

Cheapest in

May

Average price

£609
China Southern
  • China Southern
  • 25/11-7/12
  • 2 total stops
  • 58h 05m total
  • London to Bangkok
China Southern
  • China Southern
  • 12/9
  • 1 total stop
  • 32h 40m total
  • London to Bangkok
Highest demand for flights based on searches. 5% potential increase in price (£29 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in June 2025

Find flight deals from Heathrow to Bangkok

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 30 June 2025.

Tue 25/1122:00LHR - BKK
1 stop29h 10mChina Southern
Sun 7/1220:20BKK - LHR
1 stop28h 55mChina Southern
Deal found 28/6£455
Thu 27/1121:00LHR - BKK
1 stop20h 55mChina Eastern
Sun 21/1213:35BKK - LHR
1 stop34h 55mChina Eastern
Deal found 30/6£456
Wed 29/1017:40LHR - BKK
1 stop17h 25mAir China
Wed 26/1119:30BKK - LHR
1 stop29h 20mAir China
Deal found 28/6£458
Wed 2/722:00LHR - BKK
1 stop30h 00mHainan Airlines
Thu 17/711:05BKK - LHR
2 stops38h 25mHainan Airlines
Deal found 28/6£460
Sat 1/1108:25LHR - BKK
1 stop26h 20mOman Air
Tue 9/1220:05BKK - LHR
1 stop29h 20mOman Air
Deal found 30/6£466
Thu 18/913:15LHR - BKK
1 stop14h 55mAir India
Wed 24/911:15BKK - LHR
1 stop30h 15mAir India
Deal found 28/6£472
Mon 1/922:05LHR - BKK
1 stop38h 25mShenzhen Airlines
Thu 18/903:15BKK - LHR
1 stop22h 45mShenzhen Airlines
Deal found 29/6£485
Tue 5/821:45LHR - DMK
1 stop19h 05mMultiple Airlines
Sun 14/915:20DMK - LHR
2 stops33h 50mMultiple Airlines
Deal found 28/6£525

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 30 June 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

Tue 25/11

22:00-10:10

1 stop29h 10m

Bangkok Suvarnabhumi

Sun 7/12

20:20-18:15

1 stop28h 55m

£455

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 27/11

21:00-00:55

1 stop20h 55m

Bangkok Suvarnabhumi

Sun 21/12

13:35-17:30

1 stop34h 55m

£456

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 29/10

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Wed 26/11

19:30-17:50

1 stop29h 20m

£458

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 20/8

22:00-10:00

1 stop30h 00m

Bangkok Suvarnabhumi

Tue 9/9

01:30-19:30

1 stop24h 00m

£464

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 1/11

08:25-17:45

1 stop26h 20m

Bangkok Suvarnabhumi

Tue 9/12

20:05-18:25

1 stop29h 20m

£466

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 18/9

13:15-10:10

1 stop14h 55m

Bangkok Suvarnabhumi

Wed 24/9

11:15-11:30

1 stop30h 15m

£472

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 1/9

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Thu 18/9

03:15-20:00

1 stop22h 45m

£485

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Tue 5/8

21:45-22:50

1 stop19h 05m

Bangkok Don Mueang Intl

Sun 14/9

15:20-19:10

2 stops33h 50m

£525

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 12/9

22:10-12:50

1 stop32h 40m

£291

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 20/8

22:00-00:20

1 stop20h 20m

£291

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 14 results
1
2

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 27 June 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 81 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 30 June 2025.

It’s optimal to fly from London Heathrow Airport to Bangkok at midday. By choosing this option you can save up to 21% 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 29 June 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 30 June 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 30 June 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Bangkok, such as Hainan Airlines, China Southern, andAir China. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.2

Food

8.6

Comfort

8.1

Boarding

8.6

Crew

8.9

Entertainment

7.6

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

Overall

8.2

Food

8.6

Comfort

8.1

Boarding

8.6

Crew

8.9

Entertainment

7.6

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

Overall

8.2

Food

8.6

Comfort

8.1

Boarding

8.6

Crew

8.9

Entertainment

7.6

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

Overall

8.2

Food

8.6

Comfort

8.1

Boarding

8.6

Crew

8.9

Entertainment

7.6

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

Overall

8.2

Food

8.6

Comfort

8.1

Boarding

8.6

Crew

8.9

Entertainment

7.6

Reviews

1 / 2
10.0
Excellent

Anonymous,Mar 2025

CAN - PEK

Excellent services. The staff were amazing. Although if there was something that I could suggest to improve the services I’d say that snacks and drinks should be offered in between meals. Other than that then it was a lovely flight.

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

    Flying on China Southern is currently your cheapest option to Bangkok, with prices starting at £455. Additional return tickets that might be worth considering are offered by Air China and China Eastern, with the lowest prices starting at £458 and £459, respectively. Users have found that China Southern is 33% 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 £291 on China Southern. Other airlines that offer cheap prices include Hainan Airlines from £291 and Oman Air from £292 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 (66%), Thai Airways (65%), Air Canada( 60%).

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

    On average you can expect to pay £2,521 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £352 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £361.

  • 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 £15.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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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 30 June 2025.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest£330Average£545FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Shenzhen AirlinesCheapest£361Average£400FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Hainan AirlinesCheapest£370Average£427FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Royal Brunei AirlinesCheapest£458Average£532FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
SWISSCheapest£474Average£654FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£476Average£562FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
LufthansaCheapest£476Average£925FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£476Average£670FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£476Average£678FlexibilityNo cancel feeOn-time77%
Search Air France flights
Turkish AirlinesCheapest£499Average£617FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights

Fly with Cheapflights

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

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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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