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Cheap flights from Thailand to London Heathrow Airport from £243

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — LHR
29 Jun — 6 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Thailand to Heathrow
Explore the most affordable flight options available from Thailand to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 May 2026.

Wed 4/1118:05
BKK
-
LHR
1 stop31h 30m
Multiple Airlines
Wed 11/1119:45
LHR
-
BKK
1 stop31h 20m
Multiple Airlines
Deal found 27/5£575
Sun 7/619:20
BKK
-
LHR
2 stops30h 10m
Hainan Airlines
Mon 29/622:00
LHR
-
BKK
2 stops30h 00m
Hainan Airlines
Deal found 27/5£576
Thu 30/703:15
BKK
-
LHR
1 stop15h 30m
Multiple Airlines
Mon 31/822:40
LHR
-
BKK
1 stop37h 40m
Multiple Airlines
Deal found 29/5£577
Mon 23/1118:05
BKK
-
LHR
1 stop31h 30m
Multiple Airlines
Wed 25/1119:45
LHR
-
BKK
1 stop31h 20m
Multiple Airlines
Deal found 26/5£578
Thu 11/619:20
BKK
-
LHR
2 stops30h 10m
Multiple Airlines
Mon 22/610:00
LHR
-
BKK
1 stop17h 45m
Multiple Airlines
Deal found 30/5£579
Thu 11/620:15
BKK
-
LHR
1 stop25h 05m
Multiple Airlines
Fri 26/622:00
LHR
-
BKK
2 stops30h 00m
Multiple Airlines
Deal found 27/5£580
Fri 12/620:15
BKK
-
LHR
1 stop25h 05m
Gulf Air
Sun 14/610:00
LHR
-
BKK
1 stop17h 45m
Gulf Air
Deal found 29/5£581
Thu 11/620:15
BKK
-
LHR
1 stop25h 05m
Gulf Air
Sun 14/610:00
LHR
-
BKK
1 stop17h 45m
Gulf Air
Deal found 29/5£582
Sun 28/607:30
BKK
-
LHR
1 stop17h 30m
Air India
Tue 30/612:30
LHR
-
BKK
1 stop19h 05m
Air India
Deal found 28/5£584
Thu 11/619:20
BKK
-
LHR
1 stop30h 10m
Hainan Airlines
Mon 15/622:00
LHR
-
BKK
1 stop30h 00m
Hainan Airlines
Deal found 29/5£585
Mon 15/615:45
HKT
-
LHR
1 stop21h 15m
Etihad Airways
Tue 7/721:45
LHR
-
HKT
1 stop19h 55m
Etihad Airways
Deal found 25/5£585
Thu 18/602:25
HKT
-
LHR
1 stop16h 20m
Etihad Airways
Sat 22/821:45
LHR
-
HKT
1 stop19h 55m
Etihad Airways
Deal found 25/5£586

Find flight deals from Thailand to Heathrow

Keep the following information in mind while searching for Thailand to Heathrow flight deals. Data was last updated 30 May 2026.

Round-trip from

£575

One-way from

£243

Popular in

January

Cheapest in

November

Average price

£695

Good round-trip deal

£785 or less

Good one-way deal

£442 or less
Hainan Airlines
  • Hainan Airlines
  • 4/11-11/11
  • 2 total stops
  • 62h 50m total
  • Thailand to London
Search Deals
IndiGo
  • IndiGo
  • 10/6
  • 1 total stop
  • 33h 40m total
  • Thailand to London
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Thailand to London Heathrow.
Search Deals
Price to beat on a one-way flight from Thailand to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Thailand to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 30 May 2026.
Use the filters below to find and compare flights from Thailand to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Phuket CityLondon

HKT - LHR

HKTLHR

Phuket City

Thu 6/8

02:25-18:45

1 stop22h 20m

London Heathrow

Mon 24/8

09:30-12:05

1 stop20h 35m

£630

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 11/11

06:35-21:20

2 stops21h 45m

London Heathrow

Sun 15/11

20:25-21:50

1 stop18h 25m

£631

Phuket CityLondon

HKT - LHR

HKTLHR

Phuket City

Thu 18/6

15:45-07:00

1 stop21h 15m

London Heathrow

Fri 3/7

14:45-06:40

1 stop33h 55m

£631

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 14/6

07:00-18:20

2 stops41h 20m

London Heathrow

Sun 30/8

21:20-00:20

1 stop21h 00m

£632

Phuket CityLondon

HKT - LHR

HKTLHR

Phuket City

Wed 17/6

02:25-15:05

1 stop18h 40m

London Heathrow

Sun 21/6

09:30-12:05

1 stop20h 35m

£634

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Mon 29/6

03:15-15:05

1 stop17h 50m

London Heathrow

Fri 3/7

09:30-12:10

1 stop20h 40m

£650

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Sat 20/6

03:15-18:45

1 stop21h 30m

London Heathrow

Wed 1/7

21:45-23:50

1 stop20h 05m

£651

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Tue 30/6

15:55-07:00

1 stop21h 05m

London Heathrow

Wed 1/7

20:45-23:50

1 stop21h 05m

£668

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Tue 16/6

03:00-20:25

1 stop23h 25m

London Heathrow

Wed 8/7

08:25-07:15

1 stop16h 50m

£670

BangkokLondon

BKK - LHR

BKKLHR

Bangkok Suvarnabhumi

Wed 17/6

09:15-20:25

1 stop17h 10m

London Heathrow

Wed 22/7

08:25-07:15

1 stop16h 50m

£718

Flights are sorted by cheapest return flights first.

Deals found on 27/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Thailand to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Thailand with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Thailand to London Heathrow Airport

What is the cheapest month to book a flight from Thailand to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from Thailand to London Heathrow Airport (average of £171). Flying from Thailand to London Heathrow Airport in July is currently the most expensive (average of £533). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from TH to LHR?

Find hourly flight availability from Thailand to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 May 2026.

When flying from Thailand to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Thailand to London delayed?

About 14% of weekly flights between Thailand and London have experienced delays in the past year, with the average delay time being 90 minutes.

What is the most punctual flight time for Thailand to London flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Thailand to London flights?

Over the past year, EVA Air have had the lowest number of delays on this route, with just 14% of flights being delayed.

How far ahead should I book a flight from Thailand to London Heathrow Airport?

To ensure you get the cheapest price possible for a flight from Thailand to London Heathrow Airport, you should look to book at least 84 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 30 May 2026.
Check out reviews from past customers who have flown with EVA Air,Emirates, andThai Airways from Thailand to London Heathrow Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
EVA Air
8.5
Very Good
1,464 reviews
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Emirates
8.1
Very Good
3,575 reviews
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Thai Airways
7.9
Good
404 reviews
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Qatar Airways
7.4
Good
3,727 reviews
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Etihad Airways
7.3
Good
1,444 reviews
EVA Air
8.5
Very Good
1,464 reviews
Check prices

Comfort

8.3

Entertainment

8.0

Crew

8.7

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

Related info for your journey

Find useful and relevant information for your journey from Thailand to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Thailand to London Heathrow Airport?

    For as low as £605, Kuwait Airways can have you in London Heathrow Airport from Thailand in 17h 45m. Thailand and London Heathrow Airport are separated by a distance of 5947 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Thailand to London Heathrow Airport one-way?

    The cheapest airline one-way is Norse Atlantic UK, with whom users have recently found tickets for as low as £128. However, be on the lookout for offers from Scandinavian Airlines and Oman Air, as they are both options that can get you from Thailand to London Heathrow Airport for a low price.

  • What are the most popular routes from Thailand to London Heathrow Airport?

    The most popular flight routes from Thailand to London Heathrow Airport are Bangkok Suvarnabhumi - London Heathrow, Bangkok Don Mueang Intl - London Heathrow and Phuket City - London Heathrow.

  • What are the most reliable airlines from Thailand to London Heathrow Airport?

    No one likes to see their flight delayed. When booking a flight from Thailand to London Heathrow Airport consider choosing TAP AIR PORTUGAL (100%), Air Canada (87%) or Thai Airways (71%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Thailand to London Heathrow Airport?

    On average you can expect to pay £1,109 for a flight from Thailand to London Heathrow Airport. The cheapest flight overall is £422 while the most popular route, (Bangkok Suvarnabhumi - London Heathrow) is currently priced at £567.

  • Can I find deals for flights from Thailand to Heathrow that include hotel bookings?

    Yes. In addition to deals on Thailand to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Thailand to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Thailand to Heathrow.

  • Can I find deals for business class flights from Thailand to Heathrow?

    Yes. Cheapflights offers flight deals from Thailand to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Thailand to London Heathrow Airport?

    Currently, February is the cheapest month in which you can book a flight from Thailand to London Heathrow Airport (average of £171). Flying from Thailand to London Heathrow Airport in July is currently the most expensive (average of £533). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Northampton
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Ipswich
Watford
Swindon
Romford
Guildford
Borehamwood

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Thailand to Heathrow

Discover the top 10 airlines that operate flights from Thailand to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 May 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£213Average£536FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Kuwait AirwaysCheapest£268Average£541FlexibilityNo cancel feeOn-time64%
Search Kuwait Airways flights
Oman AirCheapest£286Average£568FlexibilityNo cancel feeOn-time76%
Search Oman Air flights
Etihad AirwaysCheapest£398Average£657FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
SAUDIACheapest£474Average£553FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Air ChinaCheapest£511Average£548FlexibilityNo cancel feeOn-time67%
Search Air China flights
China EasternCheapest£516Average£598FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Qatar AirwaysCheapest£599Average£763FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Gulf AirCheapest£608Average£648FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
British AirwaysCheapest£630Average£760FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Thailand to Heathrow?

Cheapflights helps you search for flights from Thailand to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Thailand to Heathrow.

Can Cheapflights find flights from Thailand to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Thailand shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Thailand to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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