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Cheap flights from London Heathrow Airport to Bangkok from $612

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 4/4. 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

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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
17:40 - 00:10LHR-BKK
23h 30m1 stop
Air China Logo
19:30 - 15:55BKK-LHR
27h 25m1 stop
$930Air China
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Thu, 4 Dec - Thu, 25 Dec
Austrian Airlines Logo
19:25 - 15:30LHR-BKK
13h 05m1 stop
Austrian Airlines Logo
14:00 - 21:40BKK-LHR
14h 40m1 stop
$941Austrian Airlines
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Tue, 6 Jan - Mon, 19 Jan
SWISS Logo
20:05 - 10:45LHR-BKK
31h 40m1 stop
SWISS Logo
12:50 - 07:55BKK-LHR
25h 05m1 stop
$958SWISS
Find Deal
Mon, 23 Mar - Tue, 26 May
Shenzhen Airlines Logo
21:10 - 11:10LHR-BKK
31h 00m1 stop
Shenzhen Airlines Logo
19:30 - 19:10BKK-LHR
30h 40m1 stop
$959Shenzhen Airlines
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Sat, 8 Nov - Thu, 20 Nov
Shenzhen Airlines Logo
21:10 - 11:10LHR-BKK
31h 00m1 stop
Shenzhen Airlines Logo
19:30 - 19:10BKK-LHR
30h 40m1 stop
$961Shenzhen Airlines
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Sat, 8 Nov - Thu, 20 Nov
Multiple Airlines Logo
19:25 - 15:30LHR-BKK
13h 05m1 stop
Multiple Airlines Logo
12:50 - 21:45BKK-LHR
14h 55m1 stop
$967Multiple Airlines
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Sun, 22 Mar - Mon, 25 May
China Southern Logo
22:00 - 17:55LHR-BKK
36h 55m1 stop
China Southern Logo
12:10 - 14:00BKK-LHR
56h 50m2 stops
$977China Southern
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Sun, 16 Nov - Fri, 21 Nov
China Southern Logo
21:30 - 12:55LHR-BKK
32h 25m2 stops
China Southern Logo
15:45 - 18:35BKK-LHR
33h 50m1 stop
$1,005China Southern
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Thu, 4 Dec - Thu, 25 Dec
Multiple Airlines Logo
13:55 - 12:20LHR-BKK
15h 25m1 stop
Multiple Airlines Logo
12:50 - 21:45BKK-LHR
14h 55m1 stop
$1,022Multiple Airlines
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Sun, 22 Mar - Sun, 24 May
SWISS Logo
13:45 - 10:45LHR-BKK
14h 00m1 stop
SWISS Logo
12:50 - 07:55BKK-LHR
25h 05m1 stop
$1,038SWISS
Find Deal
Tue, 24 Mar - Mon, 25 May

Austrian Airlines flights from London Heathrow Airport to Bangkok

Our best Austrian Airlines deals on London Heathrow Airport to Bangkok flight tickets
Austrian Airlines
6 Jan
LHR19:25London Heathrow
13h 05m
1 stop
BKK15:30Bangkok Suvarnabhumi
19 Jan
BKK14:00Bangkok Suvarnabhumi
14h 40m
1 stop
LHR21:40London Heathrow
$941
Find similar
Austrian Airlines
10 Jan
LHR19:25London Heathrow
13h 05m
1 stop
BKK15:30Bangkok Suvarnabhumi
19 Jan
BKK14:00Bangkok Suvarnabhumi
14h 40m
1 stop
LHR21:40London Heathrow
$1,075
Find similar
Austrian Airlines
4 Jan
LHR09:05London Heathrow
20h 15m
1 stop
BKK12:20Bangkok Suvarnabhumi
19 Jan
BKK14:00Bangkok Suvarnabhumi
14h 40m
1 stop
LHR21:40London Heathrow
$1,081
Find similar

Shenzhen Airlines flights from London Heathrow Airport to Bangkok

Our best Shenzhen Airlines deals on London Heathrow Airport to Bangkok flight tickets
Shenzhen Airlines
8 Nov
LHR21:10London Heathrow
31h 00m
1 stop
BKK11:10Bangkok Suvarnabhumi
20 Nov
BKK19:30Bangkok Suvarnabhumi
30h 40m
1 stop
LHR19:10London Heathrow
$959
Find similar
Shenzhen Airlines
8 Nov
LHR21:10London Heathrow
31h 00m
1 stop
BKK11:10Bangkok Suvarnabhumi
20 Nov
BKK19:30Bangkok Suvarnabhumi
30h 40m
1 stop
LHR19:10London Heathrow
$961
Find similar
Shenzhen Airlines
29 Nov
LHR21:10London Heathrow
38h 20m
1 stop
BKK18:30Bangkok Suvarnabhumi
19 Dec
BKK03:15Bangkok Suvarnabhumi
22h 55m
1 stop
LHR19:10London Heathrow
$964
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 78,305 searches. Data last updated 29 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

Thu 4/12

17:40-00:10

1 stop23h 30m

Bangkok Suvarnabhumi

Thu 25/12

19:30-15:55

1 stop27h 25m

$930

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 6/1

19:25-15:30

1 stop13h 05m

Bangkok Suvarnabhumi

Mon 19/1

14:00-21:40

1 stop14h 40m

$941

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 23/3

20:05-10:45

1 stop31h 40m

Bangkok Suvarnabhumi

Tue 26/5

12:50-07:55

1 stop25h 05m

$958

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 8/11

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Thu 20/11

19:30-19:10

1 stop30h 40m

$959

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 8/11

21:10-11:10

1 stop31h 00m

Bangkok Suvarnabhumi

Thu 20/11

19:30-19:10

1 stop30h 40m

$961

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 22/3

19:25-15:30

1 stop13h 05m

Bangkok Suvarnabhumi

Mon 25/5

12:50-21:45

1 stop14h 55m

$967

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 16/11

22:00-17:55

1 stop36h 55m

Bangkok Suvarnabhumi

Fri 21/11

12:10-14:00

2 stops56h 50m

$977

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 4/12

21:30-12:55

2 stops32h 25m

Bangkok Suvarnabhumi

Thu 25/12

15:45-18:35

1 stop33h 50m

$1,005

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 22/3

13:55-12:20

1 stop15h 25m

Bangkok Suvarnabhumi

Sun 24/5

12:50-21:45

1 stop14h 55m

$1,022

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 24/3

13:45-10:45

1 stop14h 00m

Bangkok Suvarnabhumi

Mon 25/5

12:50-07:55

1 stop25h 05m

$1,038

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 $1,247. The month of May is another great option to travel to Bangkok, with average flight prices from London Heathrow Airport averaging around $1,256.

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

The cheapest day to depart on your flight to Bangkok is on a Tuesday when prices can be found for as low as $1,238. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $2,675. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok.

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

Flying to Bangkok from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,900 when looking at flights departing in the morning. Flights to Bangkok are more costly in the evening, with an average ticket price of $2,106. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $1,438 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 $1,326 on momondo.

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

There are 3 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 9549.9 km. 13h 05m is a normal flight duration for this route.

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

    Prices for flights from London Heathrow Airport to Bangkok refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. 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 travel and health documents you'll need for your trip to Bangkok may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Bangkok. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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?

All flight searches from London to Bangkok on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between London and Bangkok by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 24.8 km from Bangkok
Bangkok Suvarnabhumi Airport
Bangkok Don Mueang Intl Airport