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Cheap flights from London Heathrow Airport to Thailand from £289

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 Thailand departing on 25/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London Heathrow Airport to Thailand

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
Find Deal
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
Air China Logo
20:25 - 00:10LHR-BKK
20h 45m1 stop
Air China Logo
01:30 - 15:55BKK-LHR
21h 25m1 stop
£457Air China
Find Deal
Tue, 2 Dec - Thu, 11 Dec
Air India Logo
08:45 - 19:30LHR-HKT
27h 45m1 stop
Air India Logo
09:10 - 19:20HKT-LHR
17h 10m1 stop
£471Air India
Find Deal
Wed, 26 Nov - Fri, 5 Dec
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
Etihad Airways Logo
08:50 - 06:05LHR-CNX
14h 15m1 stop
Etihad Airways Logo
08:50 - 14:30CNX-LHR
36h 40m1 stop
£606Etihad Airways
Find Deal
Fri, 20 Feb - Sat, 28 Feb
Etihad Airways Logo
08:50 - 21:40LHR-HDY
53h 50m2 stops
Etihad Airways Logo
22:10 - 18:10HDY-LHR
27h 00m2 stops
£663Etihad Airways
Find Deal
Sat, 14 Mar - Wed, 18 Mar
Thai Airways Logo
11:50 - 13:55LHR-CEI
19h 05m1 stop
Thai Airways Logo
18:55 - 06:40CEI-LHR
18h 45m1 stop
£886Thai Airways
Find Deal
Wed, 11 Feb - Wed, 11 Mar
Thai Airways Logo
11:50 - 09:40LHR-CEI
14h 50m1 stop
Thai Airways Logo
10:15 - 19:35CEI-LHR
16h 20m1 stop
£891Thai Airways
Find Deal
Wed, 11 Feb - Wed, 11 Mar
Emirates Logo
21:20 - 21:40LHR-HDY
41h 20m2 stops
Emirates Logo
22:10 - 20:00HDY-LHR
52h 50m2 stops
£1,726Emirates
Find Deal
Sat, 13 Dec - Sat, 20 Dec

China Southern flights from London Heathrow Airport to Thailand

Our best China Southern deals on London Heathrow Airport to Thailand 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

China Eastern flights from London Heathrow Airport to Thailand

Our best China Eastern deals on London Heathrow Airport to Thailand flight tickets
China Eastern
27 Nov
LHR21:00London Heathrow
20h 55m
1 stop
BKK00:55Bangkok Suvarnabhumi
30 Jan
BKK18:15Bangkok Suvarnabhumi
30h 15m
2 stops
LHR17:30London Heathrow
£489
Find similar
China Eastern
18 Nov
LHR21:00London Heathrow
34h 55m
2 stops
BKK14:55Bangkok Suvarnabhumi
3 Dec
BKK10:45Bangkok Suvarnabhumi
37h 45m
1 stop
LHR17:30London Heathrow
£491
Find similar
China Eastern
15 Nov
LHR21:00London Heathrow
24h 05m
1 stop
BKK04:05Bangkok Suvarnabhumi
28 Nov
BKK01:55Bangkok Suvarnabhumi
22h 35m
1 stop
LHR17:30London Heathrow
£492
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Thailand 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 Thailand 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

Tue 2/12

20:25-00:10

1 stop20h 45m

Bangkok Suvarnabhumi

Thu 11/12

01:30-15:55

1 stop21h 25m

£457

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Wed 26/11

08:45-19:30

1 stop27h 45m

Phuket City

Fri 5/12

09:10-19:20

1 stop17h 10m

£471

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

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 20/2

08:50-06:05

1 stop14h 15m

Chiang Mai

Sat 28/2

08:50-14:30

1 stop36h 40m

£606

LondonHat Yai

LHR - HDY

LHRHDY

London Heathrow

Sat 14/3

08:50-21:40

2 stops53h 50m

Hat Yai

Wed 18/3

22:10-18:10

2 stops27h 00m

£663

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 11/3

18:55-06:40

1 stop18h 45m

£886

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

11:50-09:40

1 stop14h 50m

Chiang Rai

Wed 11/3

10:15-19:35

1 stop16h 20m

£891

LondonHat Yai

LHR - HDY

LHRHDY

London Heathrow

Sat 13/12

21:20-21:40

2 stops41h 20m

Hat Yai

Sat 20/12

22:10-20:00

2 stops52h 50m

£1,726

Flights are sorted by cheapest return flights first.

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

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

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 Thailand?

In general, September is the cheapest month to fly from London Heathrow Airport to Thailand. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £622. If you are unable to visit Thailand during the month of September, then departing from London Heathrow Airport during the month May is also very affordable. Most momondo users find prices during this month for around £626.

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

The cheapest day to depart on your flight to Thailand is on a Tuesday when prices can be found for as low as £733. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £780.

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

Our data shows that the cheapest London Heathrow Airport to Thailand flights are usually those with departure times at midday. Our users have found flights to Thailand at midday for as low as £658. In contrast, the most expensive time of day to depart to Thailand is in the evening when prices are around £764.

What is the cheapest London Heathrow to Thailand flight route?

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

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

You are more likely to see cheaper flights to Thailand from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Thailand 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 Thailand from London Heathrow Airport for as low as £661 on momondo.

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

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

Can stopping save me money on London Heathrow Airport to Thailand flights?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Thailand.

Cheap London Heathrow Airport to Thailand flight deals and tips

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

Best price found

£510

Fastest flight time

11h 25m

Direct flights

Every day

Airports in Thailand

1 airport
The best one-way flight to Thailand from London Heathrow Airport in the past 72 hours is £510. The best return flight deal from London Heathrow Airport to Thailand found on momondo in the last 72 hours is £706.
The fastest flight from London Heathrow Airport to Thailand takes 11h 25m
Direct flights go from London Heathrow Airport to Thailand every day.
There is 1 airport near Thailand: Bangkok Suvarnabhumi (BKK)
Search flight deals

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

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

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

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

    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 Thailand.

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

    The required travel and health documents for your Thailand 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 Thailand. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from London Heathrow Airport to Thailand?

Best airlines flying from London Heathrow Airport to Thailand

Compare and see reviews for airlines that fly from London Heathrow Airport to Thailand with momondo
Airline
Rating
Free Cancellation
Price
Bangkok AirwaysPriceFrom £114Free CancellationRating
8.0
115 reviews
Search Bangkok Airways flights
SAUDIAPriceFrom £344Free CancellationRating
7.4
638 reviews
Search SAUDIA flights
Hainan AirlinesPriceFrom £386Free CancellationRating
8.1
50 reviews
Search Hainan Airlines 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
7,541 reviews
Search Lufthansa flights
SWISSPriceFrom £485Free CancellationRating
7.5
1,775 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
4,031 reviews
Search Turkish Airlines flights

Why use momondo?

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

It is quick and easy to find London to Thailand flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Thailand that suits you.

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

Yes. momondo allows you to filter the results for London to Thailand flights to just show those with flexible booking policies.

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

Once all potential London to Thailand flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Thailand from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Thailand trip

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