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Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from C$ 572

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 26/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Heathrow to Suvarnabhumi

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Suvarnabhumi (BKK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 834

One-way from

C$ 572

Popular in

December

Cheapest in

May

Average price

C$ 1,168

Good round-trip deal

C$ 1,246 or less
Shenzhen Airlines
  • Shenzhen Airlines
  • 14/11-11/12
  • 2 total stops
  • 60h 05m total
  • London to Bangkok
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Air China
  • Air China
  • 26/10
  • 1 total stop
  • 20h 45m total
  • London to Bangkok
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Highest demand for flights based on searches. 5% potential increase in price (C$ 101 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 52 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from London Heathrow to Bangkok Suvarnabhumi.
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Find flight deals from Heathrow to Suvarnabhumi

Cheapest flights from Heathrow to Suvarnabhumi
Explore the most affordable flight options available from Heathrow to Suvarnabhumi. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Mon 3/119:10 p.m.LHR - BKK
1 stop22h 05mShenzhen Airlines
Thu 20/113:15 a.m.BKK - LHR
1 stop22h 55mShenzhen Airlines
Deal found 10/9C$ 836
Fri 7/119:10 p.m.LHR - BKK
1 stop38h 20mShenzhen Airlines
Thu 4/1212:10 p.m.BKK - LHR
1 stop38h 00mShenzhen Airlines
Deal found 11/9C$ 837
Wed 29/109:10 p.m.LHR - BKK
1 stop22h 05mShenzhen Airlines
Tue 4/113:15 a.m.BKK - LHR
1 stop22h 55mShenzhen Airlines
Deal found 11/9C$ 840
Mon 15/99:45 a.m.LHR - BKK
1 stop25h 10mAir India
Mon 29/92:45 p.m.BKK - LHR
1 stop25h 30mAir India
Deal found 10/9C$ 854
Mon 15/92:45 p.m.LHR - BKK
1 stop27h 10mEtihad Airways
Sun 28/92:55 a.m.BKK - LHR
1 stop18h 20mEtihad Airways
Deal found 10/9C$ 874
Fri 26/910:05 p.m.LHR - BKK
1 stop22h 10mShenzhen Airlines
Thu 23/107:30 p.m.BKK - LHR
1 stop30h 30mShenzhen Airlines
Deal found 11/9C$ 877
Fri 26/910:05 p.m.LHR - BKK
1 stop22h 10mShenzhen Airlines
Sat 8/117:30 p.m.BKK - LHR
1 stop30h 40mShenzhen Airlines
Deal found 10/9C$ 879
Fri 7/119:00 p.m.LHR - BKK
1 stop18h 25mChina Eastern
Sun 7/129:05 p.m.BKK - LHR
2 stops27h 25mChina Eastern
Deal found 10/9C$ 880
Wed 15/1010:40 p.m.LHR - BKK
2 stops36h 25mAir China
Sun 26/107:30 p.m.BKK - LHR
1 stop27h 25mAir China
Deal found 10/9C$ 891
Tue 2/122:50 p.m.LHR - BKK
1 stop17h 40mAustrian Airlines
Wed 14/12:00 p.m.BKK - LHR
1 stop14h 40mAustrian Airlines
Deal found 10/9C$ 898
Thu 11/99:45 a.m.LHR - BKK
1 stop15h 55mAir India
Sat 11/108:50 p.m.BKK - LHR
1 stop19h 25mAir India
Deal found 10/9C$ 930

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Suvarnabhumi 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 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Heathrow

Fly to

Suvarnabhumi

Route

Depart

Return

Price

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 7/11

8:55 p.m.-11:20 p.m.

1 stop19h 25m

Bangkok Suvarnabhumi

Mon 10/11

8:50 p.m.-2:30 p.m.

1 stop24h 40m

C$ 992

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 28/1

9:00 a.m.-10:45 a.m.

2 stops18h 45m

Bangkok Suvarnabhumi

Wed 11/2

1:15 p.m.-8:05 a.m.

1 stop25h 50m

C$ 1,074

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 24/1

7:20 p.m.-7:10 a.m.

1 stop28h 50m

Bangkok Suvarnabhumi

Fri 20/2

2:55 a.m.-6:40 a.m.

1 stop34h 45m

C$ 1,074

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 24/2

2:15 p.m.-1:05 p.m.

1 stop15h 50m

Bangkok Suvarnabhumi

Wed 18/3

6:55 p.m.-6:25 a.m.

1 stop18h 30m

C$ 1,095

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 29/10

1:55 p.m.-11:30 p.m.

2 stops26h 35m

Bangkok Suvarnabhumi

Thu 13/11

2:55 a.m.-12:05 p.m.

1 stop16h 10m

C$ 1,113

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 7/2

1:55 p.m.-11:20 p.m.

1 stop26h 25m

Bangkok Suvarnabhumi

Wed 25/2

2:55 a.m.-2:30 p.m.

1 stop18h 35m

C$ 1,114

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 1/3

8:05 a.m.-6:15 a.m.

1 stop15h 10m

Bangkok Suvarnabhumi

Wed 18/3

6:55 p.m.-6:25 a.m.

1 stop18h 30m

C$ 1,145

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 26/2

8:35 a.m.-6:15 a.m.

1 stop14h 40m

Bangkok Suvarnabhumi

Thu 19/3

8:15 a.m.-5:25 p.m.

1 stop16h 10m

C$ 1,164

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 25/2

7:20 p.m.-6:25 p.m.

1 stop16h 05m

Bangkok Suvarnabhumi

Thu 19/3

8:15 a.m.-5:25 p.m.

1 stop16h 10m

C$ 1,164

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 25/2

2:15 p.m.-1:05 p.m.

1 stop15h 50m

Bangkok Suvarnabhumi

Sun 15/3

8:15 a.m.-5:25 p.m.

1 stop16h 10m

C$ 1,215

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 24 results
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Best time to book a flight from Heathrow to Suvarnabhumi

Have a flexible travel schedule? Discover the best time to fly to Suvarnabhumi from Heathrow with our price prediction graph.
Estimated round-trip 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 Bangkok Suvarnabhumi Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Suvarnabhumi. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport, you should look to book at least 64 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.

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

Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of C$ 917). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of C$ 1,387). 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 BKK?

Find hourly flight availability from Heathrow to Suvarnabhumi. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Bangkok Suvarnabhumi Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 34% on airfare.

How much does it cost to fly round-trip from London Heathrow Airport to Bangkok Suvarnabhumi Airport?

Reviews of airlines servicing Suvarnabhumi

Get insights into the airlines that provide service to Suvarnabhumi. 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 Suvarnabhumi. Reviews last updated 11 September 2025.
Read reviews from past customers who have flown EVA Air and Thai Airways from London Heathrow Airport to Bangkok Suvarnabhumi Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,236 reviews
Check prices

Crew

8.6

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
EVA Air
8.4
Very good
1,236 reviews
EVA Air
8.4
Very good
1,236 reviews
Check prices

Crew

8.6

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak
Thai Airways
7.8
Good
350 reviews
EVA Air
8.4
Very good
1,236 reviews
Check prices

Crew

8.6

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Aug 2025

BKK - TPE

I bought tickets for myself and my friend and had to argue with the checkin person to get our seats together for the return flights I purchased the tickets together weeks ahead of time and did not expect to have to ask for a supervisor to sit together very disappointed in booking through kayak

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Suvarnabhumi. 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 Bangkok Suvarnabhumi Airport?

    Airlines like Shenzhen Airlines, Etihad Airways, and Qatar Airways fly from London Heathrow Airport to Bangkok Suvarnabhumi Airport in about 16h 20m. The time it takes to get you to your destination can typically vary by up to 5h 45m. There are 9571 km between London Heathrow Airport and Bangkok Suvarnabhumi Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport round-trip?

    Currently priced at C$ 746, Thai Airways will fly you from London Heathrow Airport to Bangkok Suvarnabhumi Airport and back. In addition to Thai Airways, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on EVA Air for as low as C$ 1,252. Thai Airways is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport are Austrian Airlines (C$ 574), Shenzhen Airlines (C$ 643), and Etihad Airways (C$ 787).

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport are EVA Air (82%), Thai Airways (77%) and Air Canada (69%).

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

    Looking at all options, your cheapest flight can be booked for C$ 1,176. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for C$ 1,178 on average, our data indicates C$ 1,800 when flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Suvarnabhumi 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 Bangkok Suvarnabhumi Airport?

    Currently, September is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of C$ 917). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of C$ 1,387). 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 Bangkok Suvarnabhumi Airport?

Book flights to Bangkok Suvarnabhumi Airport if you plan to visit one of these locations
Cha-am

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Heathrow to Suvarnabhumi

Discover the top 2 airlines that operate flights from Heathrow to Suvarnabhumi. 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapestC$ 746AverageC$ 1,580FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EVA AirCheapestC$ 1,252AverageC$ 1,409FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Suvarnabhumi from Heathrow today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Suvarnabhumi by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to Suvarnabhumi from Heathrow 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 Heathrow to Suvarnabhumi become cheaper?

Of course! You can now track prices for flights from Heathrow to Suvarnabhumi 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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