Cheap flights from London Heathrow Airport to Bangkok from £279

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
3 Feb — 10 Feb1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Bangkok are usually found in September or May, booked 24 days in advance, depart on a Tuesday or Wednesday 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 4 January 2026.

Wed 25/219:45LHR - BKK
1 stop31h 20mHainan Airlines
Tue 17/311:10BKK - LHR
1 stop36h 10mHainan Airlines
Deal found 3/1£406
Tue 13/121:00LHR - BKK
1 stop21h 55mChina Eastern
Sun 25/110:45BKK - LHR
1 stop37h 45mChina Eastern
Deal found 4/1£407
Sun 25/121:00LHR - BKK
1 stop18h 25mChina Eastern
Sat 7/201:55BKK - LHR
1 stop22h 35mChina Eastern
Deal found 3/1£408
Tue 20/121:00LHR - BKK
2 stops34h 05mChina Eastern
Sun 1/219:05BKK - LHR
1 stop29h 25mChina Eastern
Deal found 2/1£409
Tue 13/121:00LHR - BKK
1 stop18h 25mChina Eastern
Mon 9/213:35BKK - LHR
1 stop34h 55mChina Eastern
Deal found 3/1£409
Mon 2/221:00LHR - BKK
1 stop24h 45mChina Eastern
Mon 9/219:05BKK - LHR
1 stop29h 25mChina Eastern
Deal found 2/1£410
Mon 19/121:00LHR - BKK
1 stop24h 05mChina Eastern
Thu 5/216:50BKK - LHR
1 stop31h 40mChina Eastern
Deal found 2/1£411
Wed 18/208:45LHR - BKK
1 stop22h 25mAir India
Wed 18/314:45BKK - LHR
1 stop27h 20mAir India
Deal found 4/1£411
Thu 5/322:00LHR - BKK
1 stop15h 20mAir India
Wed 18/320:50BKK - LHR
1 stop21h 15mAir India
Deal found 4/1£412
Thu 5/313:30LHR - BKK
1 stop17h 05mAir India
Mon 16/320:50BKK - LHR
1 stop21h 15mAir India
Deal found 2/1£413
Mon 2/221:00LHR - BKK
1 stop24h 05mChina Eastern
Tue 24/201:55BKK - LHR
1 stop22h 35mChina Eastern
Deal found 3/1£414
Thu 22/121:00LHR - BKK
1 stop20h 55mChina Eastern
Thu 29/119:55BKK - LHR
1 stop28h 35mChina Eastern
Deal found 2/1£414

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 4 January 2026.

Round-trip from

£406

One-way from

£279

Popular in

July

Cheapest in

September

Average price

£660
Hainan Airlines
  • Hainan Airlines
  • 25/2-17/3
  • 2 total stops
  • 67h 30m total
  • London to Bangkok
China Eastern
  • China Eastern
  • 28/1
  • 3 total stops
  • 34h 05m 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 January 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 4 January 2026.
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

Wed 25/2

19:20-23:25

1 stop21h 05m

Bangkok Suvarnabhumi

Mon 22/6

03:15-07:00

1 stop33h 45m

£478

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1/5

20:55-11:50

1 stop32h 55m

Bangkok Suvarnabhumi

Sun 14/6

15:05-15:05

1 stop30h 00m

£490

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 17/6

21:45-11:50

1 stop32h 05m

Bangkok Suvarnabhumi

Tue 7/7

03:15-18:45

1 stop21h 30m

£491

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 14/6

20:55-11:50

1 stop32h 55m

Bangkok Suvarnabhumi

Tue 14/7

15:05-18:45

1 stop33h 40m

£491

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 13/5

14:45-11:50

1 stop15h 05m

Bangkok Suvarnabhumi

Mon 8/6

03:15-15:05

1 stop17h 50m

£492

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 10/6

21:45-11:50

1 stop32h 05m

Bangkok Suvarnabhumi

Mon 22/6

15:05-07:00

1 stop21h 55m

£492

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 24/2

19:20-18:45

1 stop16h 25m

Bangkok Suvarnabhumi

Fri 19/6

15:05-18:45

1 stop33h 40m

£498

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 28/2

13:55-23:25

1 stop26h 30m

Bangkok Suvarnabhumi

Thu 12/3

02:55-18:10

1 stop22h 15m

£498

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 1/3

20:05-06:45

1 stop27h 40m

Bangkok Suvarnabhumi

Thu 19/3

20:05-05:55

1 stop16h 50m

£511

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 31/1

08:25-06:45

1 stop15h 20m

Bangkok Suvarnabhumi

Sun 15/2

09:00-18:25

1 stop16h 25m

£511

Flights are sorted by cheapest return flights first.

Deals found on 3/1

Showing 1-10 of 44 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 2 January 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 24 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 £394). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £547). 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 4 January 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 4 January 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 18% of weekly flights between London and Bangkok have experienced delays in the past year, with the average delay time being 86 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 early afternoon 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 Saturday 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 15% 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 4 January 2026.
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

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Entertainment

8.0

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Entertainment

8.0

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Entertainment

8.0

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Entertainment

8.0

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Entertainment

8.0

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

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 £478, Etihad Airways can have you in Bangkok from London Heathrow Airport in 21h 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 Norse Atlantic UK is currently your cheapest option to Bangkok, with prices starting at £293. Additional return tickets that might be worth considering are offered by Shenzhen Airlines and SAUDIA, with the lowest prices starting at £334 and £337, respectively. Users have found that Norse Atlantic UK is 57% 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 £240 on Shenzhen Airlines. Other airlines that offer cheap prices include Norse Atlantic UK from £250 and Hainan Airlines from £255 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 (83%), Thai Airways (80%), Air Canada( 76%).

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

    On average you can expect to pay £2,285 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £481 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £388.

  • 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 Palace, and Emirates Park Zoo are currently the most popular points of interest in Abu Dhabi at the moment. Etihad Towers, Emirates Palace, and Emirates Park Zoo can be accessed by travelling approximately 20.8 mi, 21.1 mi, and 7.9 mi, respectively from Abu Dhabi Zayed Intl. Travellers in need of a car in Abu Dhabi can hire one for about £18 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 £394). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £547). 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 4 January 2026.
AirlineCheapestAverageFlexibilityOn-time
SAUDIACheapest£338Average£558FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Norse Atlantic UKCheapest£348Average£555FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Hainan AirlinesCheapest£377Average£431FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Gulf AirCheapest£443Average£576FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
Royal Brunei AirlinesCheapest£467Average£534FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
LufthansaCheapest£470Average£715FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Royal JordanianCheapest£470Average£721FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Air FranceCheapest£490Average£725FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£491Average£715FlexibilityNo cancel feeOn-time75%
Search KLM flights
Turkish AirlinesCheapest£502Average£613FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines 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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