Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from ฿12,458

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
23 May — 30 May1
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 Tuesday or Thursday and return on a Wednesday

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 23 April 2026.

Mon 8/610:00
LHR
-
BKK
1 stop21h 45m
ซาอุเดียแอร์ไลน์
Sun 21/615:25
BKK
-
LHR
1 stop28h 50m
ซาอุเดียแอร์ไลน์
Deal found 22/4฿18,897
Sat 6/610:00
LHR
-
BKK
1 stop21h 45m
ซาอุเดียแอร์ไลน์
Thu 25/615:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 20/4฿18,929
Tue 28/422:10
LHR
-
BKK
1 stop19h 55m
ซาอุเดียแอร์ไลน์
Tue 5/515:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 22/4฿18,961
Sat 30/510:00
LHR
-
BKK
1 stop21h 45m
ซาอุเดียแอร์ไลน์
Sun 14/615:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 22/4฿18,993
Thu 23/422:10
LHR
-
BKK
1 stop19h 55m
ซาอุเดียแอร์ไลน์
Sun 21/615:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 22/4฿19,025
Tue 12/522:10
LHR
-
BKK
1 stop19h 55m
ซาอุเดียแอร์ไลน์
Thu 28/515:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 23/4฿19,058
Mon 15/616:15
LHR
-
BKK
1 stop15h 30m
ซาอุเดียแอร์ไลน์
Fri 26/615:45
BKK
-
LHR
1 stop26h 55m
ซาอุเดียแอร์ไลน์
Deal found 21/4฿19,090
Mon 1/610:00
LHR
-
BKK
1 stop21h 45m
ซาอุเดียแอร์ไลน์
Mon 22/601:50
BKK
-
LHR
1 stop16h 50m
ซาอุเดียแอร์ไลน์
Deal found 23/4฿19,122
Mon 11/516:15
LHR
-
BKK
1 stop15h 30m
ซาอุเดียแอร์ไลน์
Mon 25/515:20
BKK
-
LHR
1 stop27h 20m
ซาอุเดียแอร์ไลน์
Deal found 19/4฿19,186
Tue 12/522:10
LHR
-
BKK
1 stop19h 55m
ซาอุเดียแอร์ไลน์
Tue 30/615:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 21/4฿19,219
Fri 5/616:15
LHR
-
BKK
1 stop15h 30m
ซาอุเดียแอร์ไลน์
Tue 16/615:25
BKK
-
LHR
1 stop22h 05m
ซาอุเดียแอร์ไลน์
Deal found 23/4฿19,251

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 23 April 2026.

Round-trip from

฿18,897

One-way from

฿12,458

Popular in

July

Cheapest in

May

Average price

฿28,973

Good round-trip deal

฿30,446 or less

Good one-way deal

฿24,139 or less
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 8/6-21/6
  • 2 total stops
  • 50h 35m total
  • London to Bangkok
ซาอุเดียแอร์ไลน์
  • ซาอุเดียแอร์ไลน์
  • 17/6
  • 1 total stop
  • 21h 45m total
  • London to Bangkok
Highest demand for flights based on searches. 9% potential increase in price (฿99,288 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (฿24,490 potential savings vs. average return price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from London Heathrow to Bangkok Suvarnabhumi.
Price to beat on a one-way flight from London Heathrow to Bangkok Suvarnabhumi.

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 17,341 searches. Data last updated 23 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

Mon 8/6

16:15-13:45

1 stop15h 30m

Bangkok Suvarnabhumi

Tue 30/6

15:25-07:30

1 stop22h 05m

฿21,762

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 19/7

21:45-23:50

1 stop20h 05m

Bangkok Suvarnabhumi

Fri 7/8

15:05-12:45

1 stop27h 40m

฿34,928
Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 5/5

21:35-15:30

Nonstop11h 55m

Bangkok Suvarnabhumi

Tue 29/9

02:40-18:40

1 stop22h 00m

฿35,926

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

14:45-15:50

2 stops43h 05m

Bangkok Suvarnabhumi

Tue 23/6

20:50-18:40

2 stops51h 50m

฿38,727

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 14/5

21:35-15:30

Nonstop11h 55m

Bangkok Suvarnabhumi

Tue 2/6

02:40-08:20

1 stop35h 40m

฿40,497

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 20/10

08:55-10:20

2 stops19h 25m

Bangkok Suvarnabhumi

Tue 15/12

19:00-08:20

2 stops20h 20m

฿43,781

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 14/9

21:35-15:30

Nonstop11h 55m

Bangkok Suvarnabhumi

Sat 17/10

02:40-08:20

1 stop35h 40m

฿45,391

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 6/9

21:35-15:30

Nonstop11h 55m

Bangkok Suvarnabhumi

Tue 22/9

02:40-21:40

1 stop25h 00m

฿45,391

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

08:55-10:20

2 stops19h 25m

Bangkok Suvarnabhumi

Thu 18/6

19:30-10:30

2 stops21h 00m

฿49,865

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 21/9

16:10-00:10

2 stops26h 00m

Bangkok Suvarnabhumi

Fri 9/10

12:35-09:10

2 stops26h 35m

฿49,865

Flights are sorted by cheapest return flights first.

Deals found on 20/4

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

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?

The price you pay for your flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 ฿25,754). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of ฿38,502). 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 23 April 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport as you normally would.

How much does it cost for a return flight 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 23 April 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport, such as EVA Air,โอมานแอร์, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Boarding

8.4

Entertainment

8.0

Crew

8.6

Food

8.1

Comfort

8.3

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

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?

    ซาอุเดียแอร์ไลน์, เอทิฮัดแอร์เวย์, and China Eastern can get you from London Heathrow Airport to Bangkok Suvarnabhumi Airport in just under 15h 30m. Your travel time can differ by up to 27h 35m. The distance from London Heathrow Airport to Bangkok Suvarnabhumi Airport is about 9571 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at ฿12,253, ไห่หนานแอร์ไลน์ will fly you from London Heathrow Airport to Bangkok Suvarnabhumi Airport and back. In addition to ไห่หนานแอร์ไลน์, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Shenzhen Airlines and China Southern - these airlines can fly you to your destination from ฿15,455 and ฿16,309, respectively. These flights start at 59% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with โอมานแอร์, which is currently one of the cheapest options available, starting at ฿13,012. สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ flights start at ฿14,236 while deals on เอทิฮัดแอร์เวย์ start at ฿15,148 one-way.

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

    Before booking your flight to Bangkok Suvarnabhumi Airport from London Heathrow Airport, have a look at the most reliable airlines to get you to your destination on time: Thai Airways (77%), แอร์แคนาดา (74%), 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 ฿21,781. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for ฿16,386 on average, our data indicates ฿30,111 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 ฿25,754). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of ฿38,502). 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
Ko Samet
Chonburi
Cha-am
Ayutthaya
Pak Chong
Kanchanaburi
Sattahip
Ko Lan

Browse thousands of different options on Cheapflights for your next trip

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Fly from Heathrow to Suvarnabhumi on these airlines

Choose from the following airlines for your flight from Heathrow to Suvarnabhumi. Flights are based on user searches made on Cheapflights and were last updated on 23 April 2026.

Top 10 airlines flying from Heathrow to Suvarnabhumi

Discover the top 10 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 17,341 searches. Data last updated 23 April 2026.
AirlineCheapestAverageFlexibilityOn-time
ไห่หนานแอร์ไลน์Cheapest฿12,253Average฿18,466FlexibilityNo cancel feeOn-time61%
Search ไห่หนานแอร์ไลน์ flights
Shenzhen AirlinesCheapest฿15,455Average฿19,032FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
China SouthernCheapest฿16,309Average฿19,870FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest฿17,292Average฿19,334FlexibilityNo cancel feeOn-time67%
Search Air China flights
Air IndiaCheapest฿18,090Average฿21,506FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
เอทิฮัดแอร์เวย์Cheapest฿21,530Average฿25,197FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
โอมานแอร์Cheapest฿21,915Average฿24,469FlexibilityNo cancel feeOn-time76%
Search โอมานแอร์ flights
Qatar AirwaysCheapest฿22,712Average฿26,404FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Thai AirwaysCheapest฿29,080Average฿37,334FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest฿29,687Average฿34,800FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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

Cheapflights helps you search for flights from Heathrow to Suvarnabhumi via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Heathrow to Suvarnabhumi for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Suvarnabhumi flexibly with Cheapflights today.

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