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Cheap flights from London Heathrow Airport to Thailand from £262

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
14 Mar — 21 Mar1
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 12 February 2026.

Mon 16/320:25
LHR
-
CNX
1 stop18h 25m
Air China
Mon 23/323:05
CNX
-
LHR
1 stop23h 50m
Air China
Deal found 9/2£373
Wed 11/317:40
LHR
-
CNX
1 stop21h 10m
Air China
Wed 25/323:05
CNX
-
LHR
1 stop25h 50m
Air China
Deal found 9/2£374
Tue 10/317:40
LHR
-
CNX
1 stop21h 10m
Air China
Mon 16/323:05
CNX
-
LHR
1 stop25h 50m
Air China
Deal found 11/2£375
Thu 12/317:40
LHR
-
CNX
1 stop21h 10m
Air China
Thu 19/323:05
CNX
-
LHR
1 stop23h 50m
Air China
Deal found 10/2£376
Wed 11/320:25
LHR
-
CNX
1 stop18h 25m
Air China
Wed 18/323:05
CNX
-
LHR
1 stop25h 50m
Air China
Deal found 9/2£377
Fri 29/522:40
LHR
-
CNX
1 stop17h 10m
Air China
Mon 8/623:05
CNX
-
LHR
1 stop24h 35m
Air China
Deal found 11/2£387
Thu 12/317:40
LHR
-
CNX
1 stop21h 10m
Air China
Mon 16/323:05
CNX
-
LHR
1 stop23h 50m
Air China
Deal found 8/2£392
Mon 18/522:40
LHR
-
CNX
1 stop17h 10m
Air China
Mon 15/623:05
CNX
-
LHR
1 stop27h 20m
Air China
Deal found 10/2£396
Wed 4/321:00
LHR
-
BKK
1 stop20h 55m
China Eastern
Wed 18/319:05
BKK
-
LHR
1 stop29h 25m
China Eastern
Deal found 9/2£401
Thu 30/414:00
LHR
-
BKK
1 stop18h 15m
Air India
Sat 16/514:45
BKK
-
LHR
1 stop25h 30m
Air India
Deal found 11/2£402
Thu 30/414:00
LHR
-
BKK
1 stop20h 55m
Air India
Sat 9/514:45
BKK
-
LHR
1 stop25h 30m
Air India
Deal found 11/2£403
Mon 1/609:45
LHR
-
BKK
1 stop22h 30m
Air India
Sat 20/620:20
BKK
-
LHR
1 stop19h 55m
Air India
Deal found 11/2£403

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 12 February 2026.

Round-trip from

£373

One-way from

£262

Popular in

July

Cheapest in

May

Average price

£606

Good round-trip deal

£657 or less

Good one-way deal

£494 or less
Air China
  • Air China
  • 16/3-23/3
  • 2 total stops
  • 42h 15m total
  • London to Thailand
Search Deals
Air China
  • Air China
  • 15/3
  • 1 total stop
  • 20h 40m total
  • London to Thailand
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£61 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
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 12 February 2026.
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

21:00-09:05

2 stops53h 05m

Chiang Mai

Wed 25/3

16:25-17:30

2 stops32h 05m

£422

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 12/5

21:20-00:40

1 stop21h 20m

Bangkok Suvarnabhumi

Mon 18/5

02:10-18:40

1 stop22h 30m

£423

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 6/5

21:20-21:55

1 stop18h 35m

Bangkok Suvarnabhumi

Wed 13/5

05:05-18:40

1 stop19h 35m

£424

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 4/5

21:20-21:55

1 stop18h 35m

Bangkok Suvarnabhumi

Sun 24/5

19:10-18:40

1 stop29h 30m

£425

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 2/5

21:20-04:05

1 stop24h 45m

Bangkok Suvarnabhumi

Sat 23/5

07:50-18:40

2 stops40h 50m

£429

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 9/3

21:10-02:15

1 stop22h 05m

Bangkok Suvarnabhumi

Sat 4/4

03:15-20:00

1 stop22h 45m

£435

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 12/5

21:20-15:20

2 stops36h 00m

Chiang Mai

Mon 1/6

10:05-18:40

3 stops38h 35m

£435

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 1/5

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Sun 31/5

12:10-19:50

1 stop37h 40m

£437

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 8/4

22:05-18:30

1 stop38h 25m

Bangkok Suvarnabhumi

Tue 5/5

03:15-20:00

1 stop22h 45m

£447

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 11/4

22:05-02:15

1 stop22h 10m

Bangkok Suvarnabhumi

Sun 10/5

03:15-19:50

1 stop22h 35m

£448

Flights are sorted by cheapest return flights first.

Deals found on 11/2

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 £174). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £526). 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 12 February 2026.

It’s optimal to fly from London Heathrow Airport to Thailand at midday. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the morning.

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 7 February 2026.

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. Tuesday at midday 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 12 February 2026.

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 17% 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 evening 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 Friday 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 12% 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 12 February 2026.
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
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
EVA Air
8.4
Very Good
1,353 reviews
EVA Air
8.4
Very Good
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Thai Airways
7.8
Good
382 reviews
EVA Air
8.4
Very Good
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Qatar Airways
7.4
Good
3,731 reviews
EVA Air
8.4
Very Good
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Etihad Airways
7.3
Good
1,394 reviews
EVA Air
8.4
Very Good
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Air India
5.5
Fair
2,966 reviews
EVA Air
8.4
Very Good
1,353 reviews
Check prices

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.

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 15h 05m. The distance from London Heathrow Airport to Thailand is about 6149 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 £237. Users have also found prices from £250 and £252 on Hainan Airlines and Turkmenistan 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 Thai Airways (82%), EVA Air (80%) and Air Canada (79%).

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

    On average you can expect to pay £2,305 for a flight from London Heathrow Airport to Thailand. The cheapest flight overall is £447 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £383.

  • 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 £174). Flying from London Heathrow Airport to Thailand in July is currently the most expensive (average of £526). 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 New Delhi flights
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London City to Manila flights
Stansted to Manila flights
Heathrow to Phuket City flights
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Gatwick to Singapore flights
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Stansted to Hong Kong flights
Gatwick to Hongqiao Intl flights
Heathrow to Pu Dong flights
London City to Hong Kong flights
Heathrow to Gimpo Intl flights
London City to Denpasar 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 12 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£112Average£140FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Scandinavian AirlinesCheapest£278Average£674FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Norse Atlantic UKCheapest£289Average£549FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
China AirlinesCheapest£333Average£658FlexibilityNo cancel feeOn-time70%
Search China Airlines flights
ITA AirwaysCheapest£359Average£537FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights
Royal JordanianCheapest£401Average£712FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
LufthansaCheapest£458Average£693FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Gulf AirCheapest£458Average£643FlexibilityNo cancel feeOn-time67%
Search Gulf Air flights
Royal Brunei AirlinesCheapest£460Average£534FlexibilityNo cancel feeOn-time84%
Search Royal Brunei Airlines flights
IndiGoCheapest£493Average£623FlexibilityNo cancel feeOn-time80%
Search IndiGo 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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