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Cheap flights from London Heathrow Airport to Bangkok from £306

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Bangkok departing on 14/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London Heathrow Airport to Bangkok

Cheap return flights

Enter your travel dates to find the best prices.
Air China Logo
20:25 - 00:10LHR-BKK
20h 45m1 stop
Air China Logo
17:55 - 19:40BKK-LHR
32h 45m1 stop
£455Air China
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Wed, 3 Dec - Wed, 14 Jan
Air China Logo
17:40 - 18:05LHR-BKK
17h 25m1 stop
Air China Logo
19:30 - 17:50BKK-LHR
29h 20m1 stop
£456Air China
Find Deal
Sun, 11 Jan - Sun, 22 Mar
Shenzhen Airlines Logo
21:10 - 11:10LHR-BKK
31h 00m1 stop
Shenzhen Airlines Logo
03:15 - 19:10BKK-LHR
22h 55m1 stop
£458Shenzhen Airlines
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Mon, 5 Jan - Sun, 1 Mar
Shenzhen Airlines Logo
21:10 - 02:15LHR-BKK
22h 05m1 stop
Shenzhen Airlines Logo
03:15 - 19:10BKK-LHR
22h 55m1 stop
£459Shenzhen Airlines
Find Deal
Wed, 3 Dec - Sat, 31 Jan
China Southern Logo
22:00 - 10:10LHR-BKK
29h 10m1 stop
China Southern Logo
02:10 - 18:35BKK-LHR
23h 25m1 stop
£460China Southern
Find Deal
Thu, 19 Feb - Mon, 2 Mar
China Southern Logo
17:15 - 01:05LHR-BKK
24h 50m2 stops
China Southern Logo
18:05 - 18:35BKK-LHR
31h 30m1 stop
£461China Southern
Find Deal
Sun, 16 Nov - Tue, 25 Nov
Air India Logo
13:30 - 19:35LHR-BKK
23h 05m1 stop
Air India Logo
14:45 - 10:15BKK-LHR
25h 30m1 stop
£474Air India
Find Deal
Wed, 18 Mar - Mon, 6 Apr
China Eastern Logo
21:00 - 00:55LHR-BKK
20h 55m1 stop
China Eastern Logo
18:15 - 17:30BKK-LHR
30h 15m2 stops
£489China Eastern
Find Deal
Thu, 27 Nov - Fri, 30 Jan
Air India Logo
19:00 - 16:35LHR-BKK
14h 35m1 stop
Air India Logo
20:50 - 11:05BKK-LHR
21h 15m1 stop
£490Air India
Find Deal
Wed, 19 Nov - Wed, 3 Dec
China Eastern Logo
21:00 - 14:55LHR-BKK
34h 55m2 stops
China Eastern Logo
10:45 - 17:30BKK-LHR
37h 45m1 stop
£491China Eastern
Find Deal
Tue, 18 Nov - Wed, 3 Dec

China Southern flights from London Heathrow Airport to Bangkok

Our best China Southern deals on London Heathrow Airport to Bangkok flight tickets
China Southern
12 Nov
LHR17:15London Heathrow
24h 50m
2 stops
BKK01:05Bangkok Suvarnabhumi
21 Nov
BKK08:20Bangkok Suvarnabhumi
17h 15m
1 stop
LHR18:35London Heathrow
£456
Find similar
China Southern
19 Feb
LHR22:00London Heathrow
29h 10m
1 stop
BKK10:10Bangkok Suvarnabhumi
2 Mar
BKK02:10Bangkok Suvarnabhumi
23h 25m
1 stop
LHR18:35London Heathrow
£460
Find similar
China Southern
9 Nov
LHR22:00London Heathrow
36h 05m
1 stop
BKK17:05Bangkok Suvarnabhumi
21 Dec
BKK18:05Bangkok Suvarnabhumi
31h 30m
1 stop
LHR18:35London Heathrow
£461
Find similar

Air India flights from London Heathrow Airport to Bangkok

Our best Air India deals on London Heathrow Airport to Bangkok flight tickets
Air India
18 Mar
LHR13:30London Heathrow
23h 05m
1 stop
BKK19:35Bangkok Suvarnabhumi
6 Apr
BKK14:45Bangkok Suvarnabhumi
25h 30m
1 stop
LHR10:15London Heathrow
£474
Find similar
Air India
4 Nov
LHR08:45London Heathrow
25h 10m
1 stop
BKK16:55Bangkok Suvarnabhumi
2 Dec
BKK14:45Bangkok Suvarnabhumi
27h 20m
1 stop
LHR11:05London Heathrow
£474
Find similar
Air India
5 Nov
LHR20:30London Heathrow
16h 05m
1 stop
BKK19:35Bangkok Suvarnabhumi
20 Nov
BKK08:50Bangkok Suvarnabhumi
18h 40m
1 stop
LHR20:30London Heathrow
£483
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 31 October 2025.
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

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 3/12

20:25-00:10

1 stop20h 45m

Bangkok Suvarnabhumi

Wed 14/1

17:55-19:40

1 stop32h 45m

£455

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 11/1

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Sun 22/3

19:30-17:50

1 stop29h 20m

£456

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 5/1

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Sun 1/3

03:15-19:10

1 stop22h 55m

£458

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 3/12

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sat 31/1

03:15-19:10

1 stop22h 55m

£459

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/2

22:00-10:10

1 stop29h 10m

Bangkok Suvarnabhumi

Mon 2/3

02:10-18:35

1 stop23h 25m

£460

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 16/11

17:15-01:05

2 stops24h 50m

Bangkok Suvarnabhumi

Tue 25/11

18:05-18:35

1 stop31h 30m

£461

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 18/3

13:30-19:35

1 stop23h 05m

Bangkok Suvarnabhumi

Mon 6/4

14:45-10:15

1 stop25h 30m

£474

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 27/11

21:00-00:55

1 stop20h 55m

Bangkok Suvarnabhumi

Fri 30/1

18:15-17:30

2 stops30h 15m

£489

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 19/11

19:00-16:35

1 stop14h 35m

Bangkok Suvarnabhumi

Wed 3/12

20:50-11:05

1 stop21h 15m

£490

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 18/11

21:00-14:55

2 stops34h 55m

Bangkok Suvarnabhumi

Wed 3/12

10:45-17:30

1 stop37h 45m

£491

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bangkok from

How to get the cheapest flight ticket from London Heathrow Airport to Bangkok

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Bangkok?

What is the cheapest month to fly to Bangkok?

The month of September is, on average, the cheapest month to fly to Bangkok from London Heathrow Airport, with most prices found around £622. The month of May is another great option to travel to Bangkok, with average flight prices from London Heathrow Airport averaging around £626.

What is the cheapest day to depart on your flight to Bangkok?

According to our data, Sunday is the cheapest day to fly to Bangkok from London Heathrow Airport. The lowest ticket price found for a Sunday departure recently was £717. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Bangkok on Saturday is £781.

What is the cheapest time of day to depart on your flight to Bangkok?

In the afternoon is the cheapest time of day to fly from London Heathrow Airport to Bangkok when you can find flight prices for as low as £574. Flying to Bangkok in the afternoon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around £762. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to Bangkok flight route?

Fly from London Heathrow to Bangkok Suvarnabhumi for the best London Heathrow - Bangkok flight prices

How far in advance should I book a flight to Bangkok?

You are more likely to see cheaper flights to Bangkok from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around £717 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from London Heathrow Airport for as low as £661 on momondo.

What cabin class options are available on London Heathrow to Bangkok flights?

There are 4 cabin classes available to choose from on London Heathrow to Bangkok flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap London Heathrow Airport to Bangkok flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Bangkok

Fastest flight time

11h 25m

Direct flights

Every day

Airports in Bangkok

1 airport
The fastest flight from London Heathrow Airport to Bangkok takes 11h 25m
Direct flights go from London Heathrow Airport to Bangkok every day.
There is 1 airport near Bangkok: Bangkok Suvarnabhumi (BKK)
Search flight deals

  • How far is London Heathrow to Bangkok by plane?

    The distance between London Heathrow and Bangkok is about 5934.0 mi. By plane, this route typically takes 14h 35m.

  • When did momondo last update prices for flights from London Heathrow Airport to Bangkok?

    Prices for flights from London Heathrow Airport to Bangkok are refreshed on a daily basis.

  • How many operators does momondo search for flights from London Heathrow Airport to Bangkok?

  • How old do you have to be to fly from London Heathrow Airport to Bangkok?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Bangkok.

  • What documentation or ID do you need to fly to Bangkok?

    The required travel and health documents for your Bangkok trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bangkok. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Heathrow Airport to Bangkok

Compare and see reviews for airlines that fly from London Heathrow Airport to Bangkok with momondo
Airline
Rating
Free Cancellation
Price
SAUDIAPriceFrom £344Free CancellationRating
7.4
638 reviews
Search SAUDIA flights
Hainan AirlinesPriceFrom £386Free CancellationRating
8.1
50 reviews
Search Hainan Airlines flights
Gulf AirPriceFrom £456Free CancellationRating
7.2
217 reviews
Search Gulf Air flights
Norse Atlantic UKPriceFrom £464Free CancellationRating
7.2
51 reviews
Search Norse Atlantic UK flights
Royal Brunei AirlinesPriceFrom £477Free CancellationRating
0.0
0 reviews
Search Royal Brunei Airlines flights
LufthansaPriceFrom £483Free CancellationRating
6.8
7,543 reviews
Search Lufthansa flights
SWISSPriceFrom £495Free CancellationRating
7.5
1,777 reviews
Search SWISS flights
KLMPriceFrom £495Free CancellationRating
7.7
1,406 reviews
Search KLM flights
Air FrancePriceFrom £502Free CancellationRating
7.4
1,482 reviews
Search Air France flights
Turkish AirlinesPriceFrom £515Free CancellationRating
7.3
4,033 reviews
Search Turkish Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Bangkok?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Bangkok for you.

Can I find flights from London to Bangkok with flexible booking policies on momondo?

momondo does allow users to show only those flights to Bangkok from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Bangkok?

Once you have performed a search for London to Bangkok flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Bangkok right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Bangkok, momondo offers a useful price alert feature which will track prices for flights to Bangkok from London and alert you when they change.

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Find better results for your trip to Thailand

Fly into one of these airports located in Bangkok

Airports listed have a maximum distance of 15.4 mi from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport