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Cheap flights from London Heathrow Airport to Thailand from £247

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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Heathrow to Thailand

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Thailand
Explore the most affordable flight options available from Heathrow to Thailand. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Tue 25/1122:00LHR - BKK
1 stop20h 05mChina Southern
Tue 9/1215:45BKK - LHR
2 stops29h 15mChina Southern
Deal found 20/11£474
Wed 3/1221:10LHR - BKK
1 stop22h 05mShenzhen Airlines
Fri 19/1212:10BKK - LHR
1 stop38h 00mShenzhen Airlines
Deal found 21/11£474
Thu 27/1120:25LHR - BKK
1 stop20h 45mAir China
Sun 25/119:30BKK - LHR
1 stop29h 20mAir China
Deal found 21/11£475
Tue 2/1222:10LHR - BKK
1 stop31h 20mAir China
Thu 11/1219:30BKK - LHR
1 stop27h 25mAir China
Deal found 20/11£476
Mon 24/1117:40LHR - BKK
1 stop17h 25mAir China
Tue 2/1201:30BKK - LHR
1 stop23h 20mAir China
Deal found 20/11£477
Thu 20/1121:35LHR - BKK
1 stop31h 55mAir China
Wed 26/1101:30BKK - LHR
1 stop23h 20mAir China
Deal found 19/11£477
Mon 24/1117:40LHR - BKK
1 stop17h 25mAir China
Mon 1/1201:30BKK - LHR
1 stop23h 20mAir China
Deal found 19/11£478
Fri 21/1121:10LHR - BKK
1 stop22h 05mMultiple Airlines
Sun 14/1216:10BKK - LHR
1 stop31h 15mMultiple Airlines
Deal found 20/11£480
Fri 21/1121:10LHR - BKK
1 stop31h 00mMultiple Airlines
Thu 27/1101:55BKK - LHR
1 stop22h 35mMultiple Airlines
Deal found 19/11£481
Fri 5/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Sat 13/1219:10BKK - LHR
1 stop29h 45mHainan Airlines
Deal found 20/11£482
Fri 21/1121:00LHR - BKK
2 stops30h 05mMultiple Airlines
Sun 7/1219:55BKK - LHR
1 stop28h 35mMultiple Airlines
Deal found 21/11£483
Tue 25/1122:00LHR - BKK
1 stop29h 10mChina Southern
Thu 4/1212:45BKK - LHR
2 stops36h 50mChina Southern
Deal found 19/11£484

Cheap flight deals from Heathrow to Thailand

Keep the following information in mind while searching for Heathrow to Thailand flight deals. Data was last updated 21 November 2025.

Round-trip from

£474

One-way from

£247

Popular in

December

Cheapest in

May

Average price

£610

Good round-trip deal

£717 or less

Good one-way deal

£523 or less
China Southern
  • China Southern
  • 8/1-26/1
  • 3 total stops
  • 78h 35m total
  • London to Thailand
Search Deals
23/1
  • 23/1
  • 2 total stops
  • 28h 45m total
  • London to Thailand
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Thailand.
Search Deals
Price to beat on a one-way flight from London Heathrow to Thailand.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 21 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Thailand that are best for you.

Fly from

Heathrow

Fly to

Thailand

Route

Depart

Return

Price

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sat 14/3

20:25-21:50

1 stop18h 25m

Chiang Mai

Mon 23/3

23:05-15:55

1 stop23h 50m

£534

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Tue 6/1

20:55-12:00

1 stop32h 05m

Phuket City

Mon 19/1

03:10-18:10

1 stop22h 00m

£578

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Tue 6/1

20:55-23:35

1 stop19h 40m

Phuket City

Thu 22/1

03:10-14:30

1 stop18h 20m

£578

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sat 10/1

20:25-21:50

1 stop18h 25m

Chiang Mai

Sat 24/1

12:20-18:10

2 stops36h 50m

£580

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 11/3

22:00-17:50

1 stop36h 50m

Chiang Mai

Thu 26/3

18:50-17:55

2 stops30h 05m

£585

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 9/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Mon 19/1

15:35-17:30

1 stop32h 55m

£588

LondonBangkok

LHR - DMK

LHRDMK

London Heathrow

Sat 31/1

21:10-01:50

1 stop21h 40m

Bangkok Don Mueang Intl

Thu 26/2

20:55-13:45

2 stops23h 50m

£590

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 15/5

18:40-13:45

2 stops37h 05m

Chiang Mai

Mon 1/6

21:10-08:20

2 stops17h 10m

£590

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 20/2

21:00-14:20

1 stop34h 20m

Chiang Mai

Fri 20/3

16:25-17:30

2 stops32h 05m

£608

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 1/2

21:00-15:25

2 stops35h 25m

Chiang Mai

Fri 27/3

10:05-17:30

2 stops38h 25m

£611

Flights are sorted by cheapest return flights first.

Deals found on 21/11

Showing 1-10 of 60 results
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Best time to book a flight from Heathrow to Thailand

Have a flexible travel schedule? Discover the best time to fly to Thailand from Heathrow 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 London Heathrow Airport to Thailand

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

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Thailand (average of £262). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £565). 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 LHR to TH?

Find hourly flight availability from Heathrow to Thailand. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 November 2025.

It’s optimal to fly from London Heathrow Airport to Thailand in the afternoon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight at midday.

What is the cheapest day to fly from London Heathrow Airport to Thailand?

Use this chart to determine the cheapest time to fly return from Heathrow to Thailand. Price data was last updated on 2 November 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Thailand flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Thailand

Explore weekly flight availability from Heathrow to Thailand. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 November 2025.

The most flights from LHR to TH0 are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

How often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

About 19% of weekly flights between $[0, place:'genitive'] and $[1, place:'genitive'] have experienced delays in the past year, with the average delay time being 85 minutes.

What is the most punctual flight time for $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

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

Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

Over the past year, EVA Air have had the lowest number of delays on this route, with just 16% of flights being delayed.

Reviews of airlines servicing Thailand

Get insights into the airlines that provide service to Thailand. 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 Thailand. Reviews last updated 21 November 2025.
Check out reviews from past customers who have flown with EVA Air, Thai Airways, andQatar Airways from London Heathrow Airport to Thailand 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
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
EVA Air
8.4
Very Good
1,280 reviews
EVA Air
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Thai Airways
7.8
Good
362 reviews
EVA Air
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Qatar Airways
7.4
Good
3,664 reviews
EVA Air
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Etihad Airways
7.4
Good
1,309 reviews
EVA Air
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
Air India
5.5
Fair
2,943 reviews
EVA Air
8.4
Very Good
1,280 reviews
Check prices

Boarding

8.4

Entertainment

8.0

Food

8.1

Overall

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Thailand. 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 London Heathrow Airport to Thailand?

    Departing from London Heathrow Airport to Thailand will take you 18h 25m. The distance from London Heathrow Airport to Thailand is about 5598 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    For one-way options, check prices for IndiGo. According to our data, you can fly for as low as £337. Users have also found prices from £340 and £374 on Air China and British Airways, respectively.

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

    Most travelers choose London Heathrow - Bangkok Suvarnabhumi, London Heathrow - Bangkok Don Mueang Intl or London Heathrow - Phuket City when deciding on the best route from London Heathrow Airport to Thailand.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Thailand are EVA Air (85%), Thai Airways (82%) and Air Canada (78%).

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

    On average you can expect to pay £2,485 for a flight from London Heathrow Airport to Thailand. The cheapest flight overall is £471 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £363.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Thailand 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 London Heathrow Airport to Thailand?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Thailand (average of £262). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £565). 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

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Alternative routes for Heathrow to Thailand

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Heathrow to Thailand

Discover the top 10 airlines that operate flights from Heathrow to Thailand. 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 21 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£117Average£146FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
SAUDIACheapest£347Average£636FlexibilityNo cancel feeOn-time86%
Search SAUDIA flights
Hainan AirlinesCheapest£389Average£443FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Norse Atlantic UKCheapest£468Average£572FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal Brunei AirlinesCheapest£481Average£550FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
LufthansaCheapest£487Average£751FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest£489Average£773FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Hahn AirCheapest£493Average£700FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
KLMCheapest£499Average£764FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£506Average£804FlexibilityNo cancel feeOn-time77%
Search Air France 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 Heathrow to Thailand?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Thailand. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

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 Heathrow to Thailand.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Thailand, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Heathrow to Thailand and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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