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Cheap flights from London Heathrow Airport to Thailand from £275

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 22/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
22 Jan — 29 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 23 December 2025.

Mon 29/1221:00LHR - BKK
2 stops38h 05mHainan Airlines
Tue 20/119:10BKK - LHR
1 stop28h 10mHainan Airlines
Deal found 20/12£445
Tue 30/1222:10LHR - BKK
1 stop31h 20mAir China
Fri 23/117:55BKK - LHR
1 stop32h 45mAir China
Deal found 21/12£453
Mon 29/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Tue 24/219:10BKK - LHR
1 stop28h 10mHainan Airlines
Deal found 21/12£456
Mon 29/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Thu 29/119:10BKK - LHR
2 stops29h 25mHainan Airlines
Deal found 22/12£457
Mon 29/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Tue 27/119:10BKK - LHR
1 stop28h 10mHainan Airlines
Deal found 21/12£462
Tue 30/1222:10LHR - BKK
1 stop31h 20mMultiple Airlines
Tue 7/411:05BKK - LHR
1 stop38h 25mMultiple Airlines
Deal found 21/12£466
Mon 29/1221:00LHR - BKK
2 stops38h 05mHainan Airlines
Tue 13/119:10BKK - LHR
1 stop28h 10mHainan Airlines
Deal found 22/12£468
Mon 29/1221:00LHR - BKK
2 stops30h 05mHainan Airlines
Sun 25/111:10BKK - LHR
2 stops37h 45mHainan Airlines
Deal found 21/12£473
Mon 29/1221:00LHR - BKK
1 stop38h 05mHainan Airlines
Thu 15/119:10BKK - LHR
1 stop29h 25mHainan Airlines
Deal found 22/12£485
Tue 30/1222:10LHR - HKT
1 stop31h 35mAir China
Sat 7/318:25HKT - LHR
1 stop28h 30mAir China
Deal found 22/12£503
Tue 30/1222:10LHR - HKT
1 stop31h 35mMultiple Airlines
Thu 2/408:40HKT - LHR
1 stop15h 40mMultiple Airlines
Deal found 22/12£550
Tue 30/1222:10LHR - HKT
1 stop31h 35mMultiple Airlines
Sun 29/315:35HKT - LHR
3 stops33h 55mMultiple Airlines
Deal found 22/12£552

Find flight deals from Heathrow to Thailand

Keep the following information in mind while searching for Heathrow to Thailand flight deals. Data was last updated 23 December 2025.

Round-trip from

£392

One-way from

£275

Popular in

December

Cheapest in

May

Average price

£847

Good round-trip deal

£701 or less

Good one-way deal

£503 or less
China Eastern
  • China Eastern
  • 10/3-24/3
  • 2 total stops
  • 51h 15m total
  • London to Thailand
Search Deals
22/3
  • 22/3
  • 2 total stops
  • 18h 20m total
  • London to Thailand
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£39 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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 23 December 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

Tue 13/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 27/1

16:25-17:30

2 stops32h 05m

£404

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 20/1

21:00-14:20

1 stop34h 20m

Chiang Mai

Tue 9/6

08:45-12:45

1 stop34h 00m

£453

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 9/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Sun 25/1

15:35-17:30

1 stop32h 55m

£518

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Mon 5/1

17:40-21:50

1 stop21h 10m

Chiang Mai

Mon 2/2

23:05-15:55

1 stop23h 50m

£532

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Mon 15/6

11:00-13:40

1 stop20h 40m

Chiang Mai

Mon 29/6

12:35-16:35

1 stop34h 00m

£532

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sat 28/2

06:40-21:50

2 stops32h 10m

Chiang Mai

Sat 14/3

08:50-18:10

1 stop16h 20m

£533

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Mon 19/1

17:40-21:50

1 stop21h 10m

Chiang Mai

Thu 22/1

23:05-15:55

1 stop23h 50m

£534

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Mon 4/5

14:45-23:40

1 stop26h 55m

Phuket City

Fri 15/5

15:45-15:15

1 stop29h 30m

£545

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 25/4

21:30-23:05

1 stop19h 35m

Bangkok Suvarnabhumi

Wed 13/5

17:15-05:25

1 stop18h 10m

£553

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Sat 2/5

20:55-18:25

1 stop15h 30m

Phuket City

Mon 18/5

02:25-15:15

1 stop18h 50m

£555

Flights are sorted by cheapest return flights first.

Deals found on 22/12

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 £216). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £547). 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 23 December 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 20 December 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 23 December 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 from London to Thailand delayed?

About 18% of weekly flights between London and Thailand have experienced delays in the past year, with the average delay time being 86 minutes.

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

Historically, flights departing in the morning 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?

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

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

Over the past year, EVA Air have had the lowest number of delays on this route, with just 15% 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 23 December 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
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
EVA Air
8.5
Very Good
1,298 reviews
EVA Air
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Thai Airways
7.8
Good
369 reviews
EVA Air
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Qatar Airways
7.4
Good
3,686 reviews
EVA Air
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Etihad Airways
7.4
Good
1,336 reviews
EVA Air
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.
Air India
5.5
Fair
2,956 reviews
EVA Air
8.5
Very Good
1,298 reviews
Check prices

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.5

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

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 20h 40m. 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 Shenzhen Airlines. According to our data, you can fly for as low as £241. Users have also found prices from £251 and £256 on Norse Atlantic UK and Hainan Airlines, 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 (88%), Thai Airways (84%) and Air Canada (80%).

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

    On average you can expect to pay £2,333 for a flight from London Heathrow Airport to Thailand. The cheapest flight overall is £466 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £360.

  • 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 £216). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £547). 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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Stansted to Lahore flights

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 23 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£143FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Hainan AirlinesCheapest£378Average£432FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Gulf AirCheapest£444Average£577FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
Norse Atlantic UKCheapest£455Average£557FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Royal Brunei AirlinesCheapest£468Average£536FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
LufthansaCheapest£471Average£710FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Royal JordanianCheapest£472Average£718FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
Hahn AirCheapest£480Average£681FlexibilityNo cancel feeOn-timeN/A
Search Hahn Air flights
Air FranceCheapest£492Average£803FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£493Average£744FlexibilityNo cancel feeOn-time75%
Search KLM 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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