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Cheap flights from London Heathrow Airport to Thailand from £291

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 15/1. 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 Thailand

Cheap return flights

Air China Logo
17:40 - 00:10LHR-BKK
23h 30m1 stop
Air China Logo
01:30 - 17:50BKK-LHR
23h 20m1 stop
£432Air China
Find Deal
Fri, 31 Oct - Sat, 15 Nov
Air China Logo
20:25 - 00:10LHR-BKK
20h 45m1 stop
Air China Logo
13:50 - 20:15BKK-LHR
37h 25m1 stop
£433Air China
Find Deal
Mon, 1 Dec - Mon, 22 Dec
Air China Logo
22:40 - 18:10LHR-BKK
37h 30m1 stop
Air China Logo
19:35 - 17:45BKK-LHR
28h 10m1 stop
£433Air China
Find Deal
Thu, 2 Oct - Fri, 17 Oct
Air China Logo
20:25 - 00:10LHR-BKK
20h 45m1 stop
Air China Logo
01:30 - 15:55BKK-LHR
21h 25m1 stop
£434Air China
Find Deal
Wed, 26 Nov - Mon, 15 Dec
Etihad Airways Logo
14:45 - 23:35LHR-HKT
26h 50m1 stop
Etihad Airways Logo
01:00 - 15:15HKT-LHR
20h 15m1 stop
£494Etihad Airways
Find Deal
Thu, 25 Sep - Wed, 1 Oct
Etihad Airways Logo
08:50 - 06:05LHR-CNX
14h 15m1 stop
Etihad Airways Logo
08:45 - 18:45CNX-LHR
16h 00m1 stop
£499Etihad Airways
Find Deal
Wed, 4 Mar - Tue, 5 May
Thai Airways Logo
11:50 - 13:55LHR-CEI
19h 05m1 stop
Thai Airways Logo
18:55 - 19:35CEI-LHR
31h 40m1 stop
£736Thai Airways
Find Deal
Mon, 2 Mar - Sun, 8 Mar
Thai Airways Logo
11:50 - 13:55LHR-CEI
19h 05m1 stop
Thai Airways Logo
10:15 - 06:40CEI-LHR
27h 25m1 stop
£768Thai Airways
Find Deal
Wed, 29 Oct - Wed, 5 Nov
Qatar Airways Logo
13:50 - 16:50LHR-UTP
20h 00m2 stops
Qatar Airways Logo
13:00 - 06:15UTP-LHR
48h 15m2 stops
£923Qatar Airways
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Tue, 4 Nov - Fri, 14 Nov
EVA Air Logo
21:20 - 09:10LHR-TDX
28h 50m1 stop
EVA Air Logo
17:45 - 19:05TDX-LHR
32h 20m1 stop
£1,044EVA Air
Find Deal
Fri, 21 Nov - Sun, 7 Dec

Hainan Airlines flights from London Heathrow Airport to Thailand

Our best Hainan Airlines deals on London Heathrow Airport to Thailand flight tickets
Hainan Airlines
24 Oct
LHR22:00London Heathrow
30h 05m
2 stops
BKK10:05Bangkok Suvarnabhumi
9 Nov
BKK01:35Bangkok Suvarnabhumi
23h 20m
2 stops
LHR17:55London Heathrow
£440
Find similar
Hainan Airlines
1 Dec
LHR21:00London Heathrow
38h 05m
2 stops
BKK18:05Bangkok Suvarnabhumi
28 Dec
BKK01:35Bangkok Suvarnabhumi
23h 20m
2 stops
LHR17:55London Heathrow
£450
Find similar
Hainan Airlines
1 Oct
LHR22:00London Heathrow
30h 00m
1 stop
BKK10:00Bangkok Suvarnabhumi
26 Oct
BKK19:10Bangkok Suvarnabhumi
29h 45m
2 stops
LHR17:55London Heathrow
£451
Find similar

Air India flights from London Heathrow Airport to Thailand

Our best Air India deals on London Heathrow Airport to Thailand flight tickets
Air India
21 Sept
LHR21:05London Heathrow
16h 30m
1 stop
BKK19:35Bangkok Suvarnabhumi
30 Sept
BKK14:45Bangkok Suvarnabhumi
25h 30m
1 stop
LHR10:15London Heathrow
£437
Find similar
Air India
22 Sept
LHR20:35London Heathrow
17h 50m
1 stop
BKK20:25Bangkok Suvarnabhumi
29 Sept
BKK14:45Bangkok Suvarnabhumi
35h 35m
1 stop
LHR20:20London Heathrow
£438
Find similar
Air India
21 Sept
LHR12:30London Heathrow
25h 05m
1 stop
BKK19:35Bangkok Suvarnabhumi
28 Sept
BKK14:45Bangkok Suvarnabhumi
25h 30m
1 stop
LHR10:15London Heathrow
£439
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 16 September 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

Fri 31/10

17:40-00:10

1 stop23h 30m

Bangkok Suvarnabhumi

Sat 15/11

01:30-17:50

1 stop23h 20m

£432

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 1/12

20:25-00:10

1 stop20h 45m

Bangkok Suvarnabhumi

Mon 22/12

13:50-20:15

1 stop37h 25m

£433

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 2/10

22:40-18:10

1 stop37h 30m

Bangkok Suvarnabhumi

Fri 17/10

19:35-17:45

1 stop28h 10m

£433

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 26/11

20:25-00:10

1 stop20h 45m

Bangkok Suvarnabhumi

Mon 15/12

01:30-15:55

1 stop21h 25m

£434

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Thu 25/9

14:45-23:35

1 stop26h 50m

Phuket City

Wed 1/10

01:00-15:15

1 stop20h 15m

£494

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 4/3

08:50-06:05

1 stop14h 15m

Chiang Mai

Tue 5/5

08:45-18:45

1 stop16h 00m

£499

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Mon 2/3

11:50-13:55

1 stop19h 05m

Chiang Rai

Sun 8/3

18:55-19:35

1 stop31h 40m

£736

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 29/10

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 5/11

10:15-06:40

1 stop27h 25m

£768

LondonRayong

LHR - UTP

LHRUTP

London Heathrow

Tue 4/11

13:50-16:50

2 stops20h 00m

Rayong Utapao Rayong Pattaya

Fri 14/11

13:00-06:15

2 stops48h 15m

£923

LondonTrat

LHR - TDX

LHRTDX

London Heathrow

Fri 21/11

21:20-09:10

1 stop28h 50m

Trat

Sun 7/12

17:45-19:05

1 stop32h 20m

£1,044

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, May 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 £608. If you are unable to visit Thailand during the month of May, then departing from London Heathrow Airport during the month June is also very affordable. Most momondo users find prices during this month for around £612.

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 Wednesday when prices can be found for as low as £721. 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 £774.

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 £638. In contrast, the most expensive time of day to depart to Thailand is in the evening when prices are around £751.

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 £696 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 £640 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

£483

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 £483. The best return flight deal from London Heathrow Airport to Thailand found on momondo in the last 72 hours is £663.
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 £111Free CancellationRating
8.0
113 reviews
Search Bangkok Airways flights
SAUDIAPriceFrom £332Free CancellationRating
7.4
634 reviews
Search SAUDIA flights
Norse Atlantic UKPriceFrom £345Free CancellationRating
7.1
49 reviews
Search Norse Atlantic UK flights
Hainan AirlinesPriceFrom £374Free CancellationRating
8.2
45 reviews
Search Hainan Airlines flights
Royal Brunei AirlinesPriceFrom £463Free CancellationRating
5.7
7 reviews
Search Royal Brunei Airlines flights
LufthansaPriceFrom £474Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
SWISSPriceFrom £480Free CancellationRating
7.5
1,730 reviews
Search SWISS flights
KLMPriceFrom £480Free CancellationRating
7.8
1,385 reviews
Search KLM flights
Air FrancePriceFrom £485Free CancellationRating
7.4
1,469 reviews
Search Air France flights
Turkish AirlinesPriceFrom £501Free 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 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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