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Cheap flights from London Heathrow Airport to Bangkok from $398

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 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Bangkok

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Southern Logo
10:00 pm - 10:10 amLHR-BKK
29h 10m1 stop
China Southern Logo
1:55 pm - 2:00 pmBKK-LHR
31h 05m2 stops
$587China Southern
Find Deal
Tue, Nov 11 - Tue, Nov 18
Shenzhen Airlines Logo
9:10 pm - 11:10 amLHR-BKK
31h 00m1 stop
Shenzhen Airlines Logo
7:30 pm - 7:10 pmBKK-LHR
30h 40m1 stop
$588Shenzhen Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 28
China Southern Logo
5:15 pm - 10:30 pmLHR-BKK
22h 15m2 stops
China Southern Logo
6:55 pm - 6:35 pmBKK-LHR
30h 40m1 stop
$589China Southern
Find Deal
Wed, Nov 5 - Thu, Nov 27
China Southern Logo
5:15 pm - 10:30 pmLHR-BKK
22h 15m2 stops
China Southern Logo
6:05 pm - 6:35 pmBKK-LHR
31h 30m1 stop
$590China Southern
Find Deal
Wed, Oct 29 - Thu, Nov 27
Hainan Airlines Logo
9:00 pm - 10:05 amLHR-BKK
30h 05m2 stops
Hainan Airlines Logo
1:35 am - 5:55 pmBKK-LHR
23h 20m1 stop
$591Hainan Airlines
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Fri, Dec 5 - Sat, Dec 27
Hainan Airlines Logo
9:15 pm - 12:20 amLHR-BKK
20h 05m1 stop
Hainan Airlines Logo
1:35 am - 5:35 pmBKK-LHR
23h 00m2 stops
$598Hainan Airlines
Find Deal
Sun, Nov 2 - Thu, Nov 6
Air China Logo
9:35 pm - 12:30 pmLHR-BKK
31h 55m1 stop
Air China Logo
7:30 pm - 5:50 pmBKK-LHR
29h 20m1 stop
$622Air China
Find Deal
Thu, Nov 6 - Thu, Nov 20
Air China Logo
5:40 pm - 12:10 amLHR-BKK
23h 30m1 stop
Air China Logo
1:30 am - 3:55 pmBKK-LHR
21h 25m1 stop
$624Air China
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Tue, Nov 25 - Sun, Jan 25
Air India Logo
10:00 pm - 8:20 pmLHR-BKK
15h 20m1 stop
Air India Logo
8:50 am - 8:30 pmBKK-LHR
18h 40m1 stop
$648Air India
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Thu, Nov 6 - Thu, Nov 13
China Eastern Logo
9:00 pm - 3:55 pmLHR-BKK
35h 55m1 stop
China Eastern Logo
1:55 am - 5:30 pmBKK-LHR
22h 35m1 stop
$652China Eastern
Find Deal
Mon, Nov 3 - Wed, Jan 28

Shenzhen Airlines flights from London Heathrow Airport to Bangkok

Our best Shenzhen Airlines deals on London Heathrow Airport to Bangkok flight tickets
Shenzhen Airlines
Dec 3
LHR9:10 pmLondon Heathrow
31h 00m
1 stop
BKK11:10 amBangkok Suvarnabhumi
Dec 28
BKK7:30 pmBangkok Suvarnabhumi
30h 40m
1 stop
LHR7:10 pmLondon Heathrow
$588
Find similar
Shenzhen Airlines
Oct 29
LHR9:10 pmLondon Heathrow
22h 05m
1 stop
BKK2:15 amBangkok Suvarnabhumi
Nov 4
BKK3:15 amBangkok Suvarnabhumi
22h 55m
1 stop
LHR7:10 pmLondon Heathrow
$594
Find similar
Shenzhen Airlines
Oct 29
LHR9:10 pmLondon Heathrow
22h 05m
1 stop
BKK2:15 amBangkok Suvarnabhumi
Nov 18
BKK3:15 amBangkok Suvarnabhumi
22h 55m
1 stop
LHR7:10 pmLondon Heathrow
$595
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
Dec 5
LHR9:00 pmLondon Heathrow
30h 05m
2 stops
BKK10:05 amBangkok Suvarnabhumi
Dec 27
BKK1:35 amBangkok Suvarnabhumi
23h 20m
1 stop
LHR5:55 pmLondon Heathrow
$591
Find similar
Hainan Airlines
Nov 2
LHR9:15 pmLondon Heathrow
20h 05m
1 stop
BKK12:20 amBangkok Suvarnabhumi
Nov 6
BKK1:35 amBangkok Suvarnabhumi
23h 00m
2 stops
LHR5:35 pmLondon Heathrow
$598
Find similar
Hainan Airlines
Jan 9
LHR9:00 pmLondon Heathrow
30h 05m
2 stops
BKK10:05 amBangkok Suvarnabhumi
Jan 24
BKK7:10 pmBangkok Suvarnabhumi
29h 45m
1 stop
LHR5:55 pmLondon Heathrow
$603
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momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 16, 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

Tue 11/11

10:00 pm-10:10 am

1 stop29h 10m

Bangkok Suvarnabhumi

Tue 11/18

1:55 pm-2:00 pm

2 stops31h 05m

$587

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 12/3

9:10 pm-11:10 am

1 stop31h 00m

Bangkok Suvarnabhumi

Sun 12/28

7:30 pm-7:10 pm

1 stop30h 40m

$588

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 11/5

5:15 pm-10:30 pm

2 stops22h 15m

Bangkok Suvarnabhumi

Thu 11/27

6:55 pm-6:35 pm

1 stop30h 40m

$589

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 10/29

5:15 pm-10:30 pm

2 stops22h 15m

Bangkok Suvarnabhumi

Thu 11/27

6:05 pm-6:35 pm

1 stop31h 30m

$590

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 12/5

9:00 pm-10:05 am

2 stops30h 05m

Bangkok Suvarnabhumi

Sat 12/27

1:35 am-5:55 pm

1 stop23h 20m

$591

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 11/2

9:15 pm-12:20 am

1 stop20h 05m

Bangkok Suvarnabhumi

Thu 11/6

1:35 am-5:35 pm

2 stops23h 00m

$598

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

9:35 pm-12:30 pm

1 stop31h 55m

Bangkok Suvarnabhumi

Thu 11/20

7:30 pm-5:50 pm

1 stop29h 20m

$622

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 11/25

5:40 pm-12:10 am

1 stop23h 30m

Bangkok Suvarnabhumi

Sun 1/25

1:30 am-3:55 pm

1 stop21h 25m

$624

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

10:00 pm-8:20 pm

1 stop15h 20m

Bangkok Suvarnabhumi

Thu 11/13

8:50 am-8:30 pm

1 stop18h 40m

$648

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 11/3

9:00 pm-3:55 pm

1 stop35h 55m

Bangkok Suvarnabhumi

Wed 1/28

1:55 am-5:30 pm

1 stop22h 35m

$652

Flights are sorted by cheapest round-trip 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 cheapest month to fly to Bangkok?

If you aren’t able to travel during the month of September, then book flights to Bangkok from London Heathrow Airport during May instead. Flights to Bangkok in May, while not as cheap as those in September, still average around $826.

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

On average, the least expensive day to fly to Bangkok from London Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $967. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from London Heathrow Airport to Bangkok on a Saturday will generally be more expensive and average around $1,094. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Bangkok is in the afternoon. momondo users have found flights departing from London Heathrow Airport to Bangkok in the afternoon for as low as $739. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around $1,053. 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 $944 when searching weeks out. 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 $870 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?

    Bangkok is 5934.0 mi away from London Heathrow. 15h 20m 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 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport to Bangkok.

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

    The necessary travel and health documents for your Bangkok trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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 $407Free CancellationRating
7.4
635 reviews
Search SAUDIA flights
China EasternPriceFrom $539Free CancellationRating
7.2
169 reviews
Search China Eastern flights
Shenzhen AirlinesPriceFrom $544Free CancellationRating
7.5
20 reviews
Search Shenzhen Airlines flights
Air ChinaPriceFrom $556Free CancellationRating
7.2
114 reviews
Search Air China flights
Hainan AirlinesPriceFrom $560Free CancellationRating
8.2
45 reviews
Search Hainan Airlines flights
China SouthernPriceFrom $577Free CancellationRating
7.4
116 reviews
Search China Southern flights
Air IndiaPriceFrom $600Free CancellationRating
5.5
2,937 reviews
Search Air India flights
Gulf AirPriceFrom $626Free CancellationRating
7.1
213 reviews
Search Gulf Air flights
Austrian AirlinesPriceFrom $641Free CancellationRating
7.6
853 reviews
Search Austrian Airlines flights
Oman AirPriceFrom $683Free CancellationRating
8.2
99 reviews
Search Oman Air flights

Why use momondo?

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

Finding the right flight to Bangkok from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Bangkok quick and easy, saving you time and money.

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?

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?

Yes. momondo can track prices for London to Bangkok flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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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