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Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from $542

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 31/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
30 May — 6 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Bangkok Suvarnabhumi are usually found in May or September, booked 85 days in advance, depart on a Sunday or Monday and return on a Monday

Cheap flight deals from Heathrow to Suvarnabhumi

Enter your travel dates to find the best prices.

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 30 April 2026.

Sat 6/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Tue 16/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/4$835
Sat 6/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 18/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4$837
Fri 12/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 18/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 27/4$838
Fri 12/610:00
LHR
-
BKK
1 stop21h 45m
SAUDIA
Sun 14/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 28/4$840
Thu 28/522:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Thu 11/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/4$847
Sun 3/522:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Tue 26/515:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4$848
Fri 12/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 25/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 27/4$852
Sat 13/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 25/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 29/4$854
Thu 11/622:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Sat 27/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 27/4$855
Thu 11/622:10
LHR
-
BKK
1 stop19h 55m
SAUDIA
Sat 20/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 28/4$856
Mon 15/616:15
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 25/615:25
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 30/4$863

Find 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 30 April 2026.

Round-trip from

$837

One-way from

$542

Popular in

July

Cheapest in

May

Average price

$1,259

Good one-way deal

$1,677 or less
SAUDIA
  • SAUDIA
  • 6/6-18/6
  • 2 total stops
  • 37h 35m total
  • London to Bangkok
Search Deals
SAUDIA
  • SAUDIA
  • 31/5
  • 1 total stop
  • 19h 55m total
  • London to Bangkok
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($184 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($47 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from London Heathrow to Bangkok Suvarnabhumi.
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 30 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 4/6

14:00-20:25

1 stop24h 25m

Bangkok Suvarnabhumi

Sun 5/7

20:20-10:15

1 stop19h 55m

$1,040

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 5/6

20:50-19:00

1 stop16h 10m

Bangkok Suvarnabhumi

Wed 1/7

09:45-18:45

1 stop15h 00m

$1,132

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 6/9

22:05-09:45

1 stop29h 40m

Bangkok Suvarnabhumi

Mon 7/12

19:15-06:35

1 stop18h 20m

$1,166

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 4/9

22:05-09:45

1 stop29h 40m

Bangkok Suvarnabhumi

Tue 8/12

19:15-14:45

1 stop26h 30m

$1,213

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

16:25-14:50

2 stops16h 25m

Bangkok Suvarnabhumi

Tue 11/8

12:25-09:40

1 stop27h 15m

$1,501

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 17/8

08:25-06:50

1 stop16h 25m

Bangkok Suvarnabhumi

Tue 25/8

09:00-19:10

1 stop16h 10m

$1,897

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 31/7

08:25-13:25

2 stops23h 00m

Bangkok Suvarnabhumi

Fri 14/8

11:05-06:30

2 stops25h 25m

$2,305

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 16/5

07:30-00:10

2 stops34h 40m

Bangkok Suvarnabhumi

Wed 3/6

15:00-09:10

2 stops24h 10m

$2,333
Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 31/5

21:35-15:30

Nonstop11h 55m

Bangkok Suvarnabhumi

Fri 3/7

12:45-19:20

Nonstop12h 35m

$2,373

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 10/5

10:20-05:30

1 stop37h 10m

Bangkok Suvarnabhumi

Mon 1/6

15:00-20:40

2 stops35h 40m

$2,390

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 24 resultsSorted by cheapest first
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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 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 Bangkok Suvarnabhumi Airport

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

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 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.

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

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of $1,119). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of $1,671). 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 30 April 2026.

When flying from London Heathrow Airport to Bangkok Suvarnabhumi 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 much does it cost for a return flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport?

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?

    A quick flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport can take about 14h 25m. Air India provides one of the quickest options available for as low as $1,135. The distance from London Heathrow Airport to Bangkok Suvarnabhumi Airport is about 9571 km. This flight may include one or multiple stops.

  • 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 Thai Airways (77%), Air Canada (74%) and EVA Air (71%).

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

    Looking at all options, your cheapest flight can be booked for $1,223. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for $1,352 on average, our data indicates $1,706 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 holiday 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of $1,119). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of $1,671). 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
Chonburi
Ko Samet
Kanchanaburi
Ko Lan
Cha-am
Ayutthaya

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Heathrow to Suvarnabhumi

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Suvarnabhumi 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 Suvarnabhumi?

Deals for Heathrow to Suvarnabhumi flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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?

Yes! Start tracking prices for Heathrow to Suvarnabhumi flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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