Cheap flights from London Heathrow Airport to Bangkok from £297

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
3 May — 10 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 3 April 2026.

Wed 22/410:10
LHR
-
BKK
1 stop21h 35m
SAUDIA
Wed 17/615:20
BKK
-
LHR
1 stop27h 20m
SAUDIA
Deal found 31/3£430
Sat 25/422:10
LHR
-
BKK
1 stop33h 30m
SAUDIA
Sun 10/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 31/3£431
Mon 1/622:05
LHR
-
BKK
1 stop31h 05m
Shenzhen Airlines
Tue 30/612:10
BKK
-
LHR
1 stop37h 50m
Shenzhen Airlines
Deal found 30/3£432
Fri 1/516:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 17/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/3£433
Thu 14/522:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Tue 13/1015:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 31/3£433
Mon 4/516:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 21/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/3£434
Mon 1/622:05
LHR
-
BKK
1 stop31h 05m
Shenzhen Airlines
Sat 20/603:15
BKK
-
LHR
1 stop22h 45m
Shenzhen Airlines
Deal found 30/3£435
Mon 2/1121:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Sun 15/1103:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 31/3£436
Mon 8/609:30
LHR
-
DMK
2 stops22h 20m
Multiple Airlines
Thu 18/616:50
DMK
-
LHR
2 stops20h 10m
Multiple Airlines
Deal found 1/4£437
Fri 6/1121:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Fri 27/1119:30
BKK
-
LHR
1 stop30h 40m
Shenzhen Airlines
Deal found 30/3£437
Sun 3/522:05
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Thu 4/619:15
BKK
-
LHR
1 stop30h 45m
Shenzhen Airlines
Deal found 1/4£438
Sat 16/522:05
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Sun 7/603:15
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 31/3£439

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 April 2026.

Round-trip from

£430

One-way from

£297

Popular in

July

Cheapest in

May

Average price

£694
SAUDIA
  • SAUDIA
  • 22/4-17/6
  • 2 total stops
  • 48h 55m total
  • London to Bangkok
Hainan Airlines
  • Hainan Airlines
  • 1/5
  • 2 total stops
  • 30h 00m total
  • London to Bangkok
Highest demand for flights based on searches. 9% potential increase in price (£56 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 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 3 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

Sat 16/5

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Tue 26/5

19:15-20:00

1 stop30h 45m

£494

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Mon 1/6

14:45-22:40

2 stops25h 55m

Bangkok Don Mueang Intl

Sun 14/6

09:55-07:00

2 stops27h 05m

£498

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 5/6

22:05-18:15

1 stop38h 10m

Bangkok Suvarnabhumi

Fri 12/6

19:15-19:50

1 stop30h 35m

£515

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 31/5

22:05-18:15

1 stop38h 10m

Bangkok Suvarnabhumi

Thu 11/6

03:15-20:00

1 stop22h 45m

£523

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 11/5

20:45-18:10

1 stop15h 25m

Bangkok Suvarnabhumi

Thu 3/9

21:00-12:45

1 stop21h 45m

£722

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Wed 3/6

09:05-12:40

2 stops21h 35m

Bangkok Don Mueang Intl

Wed 17/6

11:50-06:25

2 stops24h 35m

£746

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Mon 11/5

09:00-11:05

2 stops20h 05m

Bangkok Don Mueang Intl

Thu 4/6

13:45-07:30

2 stops23h 45m

£756

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Wed 22/4

08:25-12:40

2 stops22h 15m

Bangkok Don Mueang Intl

Wed 29/4

13:45-06:25

2 stops22h 40m

£761

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Fri 22/5

08:25-16:40

2 stops26h 15m

Bangkok Don Mueang Intl

Sat 6/6

13:45-07:30

2 stops23h 45m

£807

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Sun 17/5

09:05-12:40

2 stops21h 35m

Bangkok Don Mueang Intl

Sun 7/6

13:45-07:35

2 stops23h 50m

£809

Flights are sorted by cheapest return flights first.

Deals found on 3/4

Showing 1-10 of 43 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 2 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 £384). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £541). 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 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 3 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 14% 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 3 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.

Food

8.1

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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

Comfort

8.3

Crew

8.7

Boarding

8.4

Overall

8.5

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 £722, Shenzhen Airlines can have you in Bangkok from London Heathrow Airport in 15h 25m. 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 £218. Additional return tickets that might be worth considering are offered by Shenzhen Airlines and China Airlines, with the lowest prices starting at £339 and £345, 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 £245 on Shenzhen Airlines. Other airlines that offer cheap prices include Hainan Airlines from £254 and China Eastern from £271 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 £2,410 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £476 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £370.

  • 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 £19 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 £384). Flying from London Heathrow Airport to Bangkok in July is currently the most expensive (average of £541). 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 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£218Average£566FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
China AirlinesCheapest£345Average£670FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
Scandinavian AirlinesCheapest£345Average£693FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
ITA AirwaysCheapest£371Average£541FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Turkish AirlinesCheapest£400Average£651FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Royal JordanianCheapest£415Average£738FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£456Average£733FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£474Average£736FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
KLMCheapest£511Average£728FlexibilityNo cancel feeOn-time75%
Search KLM flights
IndiGoCheapest£516Average£627FlexibilityNo cancel feeOn-time80%
Search IndiGo 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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