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Cheap flights from London Heathrow Airport to Bangkok from £297

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 2/10. 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

China Southern Logo
22:00 - 01:05LHR-BKK
20h 05m1 stop
China Southern Logo
02:10 - 18:35BKK-LHR
23h 25m1 stop
£439China Southern
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Wed, 4 Mar - Wed, 18 Mar
China Southern Logo
22:00 - 22:30LHR-BKK
17h 30m1 stop
China Southern Logo
02:10 - 18:35BKK-LHR
23h 25m1 stop
£439China Southern
Find Deal
Wed, 4 Mar - Sun, 15 Mar
China Eastern Logo
21:00 - 22:25LHR-BKK
18h 25m1 stop
China Eastern Logo
01:55 - 17:30BKK-LHR
22h 35m1 stop
£440China Eastern
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Tue, 4 Nov - Thu, 13 Nov
Air China Logo
17:40 - 18:05LHR-BKK
17h 25m1 stop
Air China Logo
01:30 - 15:55BKK-LHR
21h 25m1 stop
£441Air China
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Wed, 5 Nov - Wed, 19 Nov
Air China Logo
17:40 - 18:05LHR-BKK
17h 25m1 stop
Air China Logo
01:30 - 15:55BKK-LHR
21h 25m1 stop
£442Air China
Find Deal
Wed, 5 Nov - Sun, 16 Nov
China Eastern Logo
21:20 - 19:50LHR-BKK
40h 30m2 stops
China Eastern Logo
18:15 - 17:30BKK-LHR
30h 15m2 stops
£443China Eastern
Find Deal
Thu, 2 Oct - Wed, 12 Nov
Air India Logo
13:00 - 19:35LHR-BKK
23h 35m1 stop
Air India Logo
14:45 - 11:05BKK-LHR
27h 20m1 stop
£450Air India
Find Deal
Sun, 26 Oct - Sun, 2 Nov
Air India Logo
21:05 - 19:35LHR-BKK
16h 30m1 stop
Air India Logo
20:50 - 11:30BKK-LHR
20h 40m1 stop
£450Air India
Find Deal
Wed, 24 Sep - Wed, 8 Oct
Etihad Airways Logo
20:55 - 23:55LHR-BKK
21h 00m1 stop
Etihad Airways Logo
20:55 - 15:15BKK-LHR
24h 20m1 stop
£463Etihad Airways
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Sun, 28 Sep - Thu, 2 Oct
Etihad Airways Logo
14:45 - 23:55LHR-BKK
27h 10m1 stop
Etihad Airways Logo
02:55 - 15:15BKK-LHR
18h 20m1 stop
£470Etihad Airways
Find Deal
Tue, 23 Sep - Sun, 28 Sep

China Eastern flights from London Heathrow Airport to Bangkok

Our best China Eastern deals on London Heathrow Airport to Bangkok flight tickets
China Eastern
4 Nov
LHR21:00London Heathrow
18h 25m
1 stop
BKK22:25Bangkok Suvarnabhumi
13 Nov
BKK01:55Bangkok Suvarnabhumi
22h 35m
1 stop
LHR17:30London Heathrow
£440
Find similar
China Eastern
23 Sept
LHR21:20London Heathrow
35h 35m
3 stops
BKK14:55Bangkok Suvarnabhumi
13 Oct
BKK02:10Bangkok Suvarnabhumi
22h 30m
1 stop
LHR18:40London Heathrow
£443
Find similar
China Eastern
22 Sept
LHR21:20London Heathrow
33h 35m
3 stops
BKK12:55Bangkok Suvarnabhumi
6 Oct
BKK13:35Bangkok Suvarnabhumi
35h 05m
1 stop
LHR18:40London Heathrow
£444
Find similar

Hainan Airlines flights from London Heathrow Airport to Bangkok

Our best Hainan Airlines deals on London Heathrow Airport to Bangkok flight tickets
Hainan Airlines
1 Oct
LHR22:00London Heathrow
38h 15m
1 stop
BKK18:15Bangkok Suvarnabhumi
30 Oct
BKK01:35Bangkok Suvarnabhumi
23h 00m
1 stop
LHR17:35London Heathrow
£441
Find similar
Hainan Airlines
19 Sept
LHR22:00London Heathrow
30h 00m
2 stops
BKK10:00Bangkok Suvarnabhumi
5 Oct
BKK19:20Bangkok Suvarnabhumi
30h 10m
2 stops
LHR19:30London Heathrow
£441
Find similar
Hainan Airlines
24 Sept
LHR22:00London Heathrow
30h 00m
1 stop
BKK10:00Bangkok Suvarnabhumi
16 Oct
BKK11:05Bangkok Suvarnabhumi
38h 25m
2 stops
LHR19:30London Heathrow
£453
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 12 September 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 4/3

22:00-01:05

1 stop20h 05m

Bangkok Suvarnabhumi

Wed 18/3

02:10-18:35

1 stop23h 25m

£439

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 4/3

22:00-22:30

1 stop17h 30m

Bangkok Suvarnabhumi

Sun 15/3

02:10-18:35

1 stop23h 25m

£439

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 4/11

21:00-22:25

1 stop18h 25m

Bangkok Suvarnabhumi

Thu 13/11

01:55-17:30

1 stop22h 35m

£440

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 5/11

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Wed 19/11

01:30-15:55

1 stop21h 25m

£441

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 5/11

17:40-18:05

1 stop17h 25m

Bangkok Suvarnabhumi

Sun 16/11

01:30-15:55

1 stop21h 25m

£442

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 2/10

21:20-19:50

2 stops40h 30m

Bangkok Suvarnabhumi

Wed 12/11

18:15-17:30

2 stops30h 15m

£443

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 26/10

13:00-19:35

1 stop23h 35m

Bangkok Suvarnabhumi

Sun 2/11

14:45-11:05

1 stop27h 20m

£450

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 24/9

21:05-19:35

1 stop16h 30m

Bangkok Suvarnabhumi

Wed 8/10

20:50-11:30

1 stop20h 40m

£450

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 28/9

20:55-23:55

1 stop21h 00m

Bangkok Suvarnabhumi

Thu 2/10

20:55-15:15

1 stop24h 20m

£463

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 23/9

14:45-23:55

1 stop27h 10m

Bangkok Suvarnabhumi

Sun 28/9

02:55-15:15

1 stop18h 20m

£470

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 May is, on average, the cheapest month to fly to Bangkok from London Heathrow Airport, with most prices found around £610. The month of June is another great option to travel to Bangkok, with average flight prices from London Heathrow Airport averaging around £614.

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 £710. 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 £777.

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 £556. 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 £752. 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 £697 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 £646 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)
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  • 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 13h 05m.

  • 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 £333Free CancellationRating
7.4
634 reviews
Search SAUDIA flights
Norse Atlantic UKPriceFrom £346Free CancellationRating
7.1
49 reviews
Search Norse Atlantic UK flights
Hainan AirlinesPriceFrom £375Free CancellationRating
8.2
45 reviews
Search Hainan Airlines flights
Royal Brunei AirlinesPriceFrom £464Free CancellationRating
5.7
7 reviews
Search Royal Brunei Airlines flights
Austrian AirlinesPriceFrom £472Free CancellationRating
7.6
850 reviews
Search Austrian Airlines flights
KLMPriceFrom £482Free CancellationRating
7.8
1,385 reviews
Search KLM flights
SWISSPriceFrom £482Free CancellationRating
7.5
1,731 reviews
Search SWISS flights
Air FrancePriceFrom £486Free CancellationRating
7.4
1,469 reviews
Search Air France flights
LufthansaPriceFrom £490Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom £503Free CancellationRating
7.3
3,968 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.

An easier way to manage your Bangkok trip

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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