Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from ฿12,606

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Bangkok Suvarnabhumi are usually found in September or May, booked 85 days in advance, depart on a Sunday or Wednesday and return on a Tuesday

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 10 June 2026.

Mon 2/1121:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Fri 13/1103:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 8/6฿20,506
Mon 2/1121:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Thu 26/1112:10
BKK
-
LHR
1 stop38h 00m
Shenzhen Airlines
Deal found 9/6฿20,539
Mon 2/1121:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Tue 1/1203:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 10/6฿20,572
Sat 21/1121:10
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Sun 29/1112:10
BKK
-
LHR
1 stop38h 00m
Shenzhen Airlines
Deal found 6/6฿20,605
Thu 3/1221:35
LHR
-
BKK
1 stop31h 55m
Air China
Tue 8/1201:30
BKK
-
LHR
1 stop23h 20m
Air China
Deal found 10/6฿20,638
Mon 2/1121:10
LHR
-
BKK
1 stop31h 00m
Shenzhen Airlines
Tue 17/1103:15
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 8/6฿20,671
Sat 28/1121:35
LHR
-
BKK
1 stop36h 05m
Air China
Wed 24/201:30
BKK
-
LHR
1 stop21h 25m
Air China
Deal found 10/6฿20,703
Thu 29/1021:35
LHR
-
BKK
1 stop36h 05m
Air China
Wed 11/1101:30
BKK
-
LHR
1 stop21h 25m
Air China
Deal found 6/6฿20,736
Wed 2/922:00
LHR
-
BKK
1 stop30h 00m
ไห่หนานแอร์ไลน์
Sun 6/919:20
BKK
-
LHR
2 stops30h 10m
ไห่หนานแอร์ไลน์
Deal found 9/6฿20,769
Fri 4/922:00
LHR
-
BKK
2 stops30h 00m
ไห่หนานแอร์ไลน์
Sun 6/919:20
BKK
-
LHR
2 stops30h 10m
ไห่หนานแอร์ไลน์
Deal found 10/6฿20,802
Tue 17/1120:25
LHR
-
BKK
1 stop20h 45m
Air China
Sat 5/1201:30
BKK
-
LHR
1 stop21h 25m
Air China
Deal found 7/6฿20,835
Tue 3/1121:35
LHR
-
BKK
1 stop31h 55m
Air China
Fri 4/1217:55
BKK
-
LHR
1 stop32h 45m
Air China
Deal found 10/6฿20,868

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 10 June 2026.

Round-trip from

฿20,506

One-way from

฿12,606

Popular in

December

Cheapest in

September

Average price

฿27,286

Good round-trip deal

฿41,845 or less

Good one-way deal

฿27,268 or less
Shenzhen Airlines
  • Shenzhen Airlines
  • 2/11-10/11
  • 2 total stops
  • 45h 00m total
  • London to Bangkok
Air China
  • Air China
  • 19/9
  • 1 total stop
  • 19h 30m total
  • London to Bangkok
Highest demand for flights based on searches. 5% potential increase in price (฿57,393 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (฿25,783 potential savings vs. average return price).
Average for round-trip flights in June 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 10 June 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 29/10

06:40-10:40

2 stops21h 00m

Bangkok Suvarnabhumi

Thu 12/11

12:35-09:35

2 stops28h 00m

฿27,286

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 26/11

10:20-10:40

1 stop17h 20m

Bangkok Suvarnabhumi

Thu 3/12

12:35-09:35

2 stops28h 00m

฿27,517

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 1/11

06:40-10:40

1 stop21h 00m

Bangkok Suvarnabhumi

Sun 22/11

12:35-14:35

2 stops33h 00m

฿27,517

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 1/11

06:40-10:40

1 stop21h 00m

Bangkok Suvarnabhumi

Sun 29/11

12:35-09:35

2 stops28h 00m

฿27,583

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 19/11

07:05-10:40

2 stops20h 35m

Bangkok Suvarnabhumi

Thu 26/11

12:35-09:35

2 stops28h 00m

฿27,648

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 16/8

21:45-12:10

1 stop32h 25m

Bangkok Suvarnabhumi

Tue 2/3

14:40-12:05

1 stop28h 25m

฿28,998
Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 10/11

09:00-10:45

2 stops18h 45m

Bangkok Suvarnabhumi

Wed 25/11

13:15-21:40

1 stop15h 25m

฿29,195

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 7/11

06:40-10:40

2 stops21h 00m

Bangkok Suvarnabhumi

Sat 21/11

12:35-14:35

2 stops33h 00m

฿30,644

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 28/10

09:30-09:20

1 stop16h 50m

Bangkok Suvarnabhumi

Sat 3/4

19:15-14:45

1 stop25h 30m

฿31,236

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 28/9

08:55-09:50

2 stops18h 55m

Bangkok Suvarnabhumi

Fri 23/10

23:40-09:55

2 stops16h 15m

฿32,421

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 24 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of ฿25,937). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of ฿39,432). 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 10 June 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 10 June 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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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

Comfort

8.3

Food

8.1

Overall

8.5

Crew

8.7

Entertainment

8.0

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?

    สแกนดอเนเวียนแอร์ไลน์ can get you from London Heathrow Airport to Bangkok Suvarnabhumi Airport in just under 21h. Your travel time can differ by up to . The distance from London Heathrow Airport to Bangkok Suvarnabhumi Airport is about 9571 km.

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

    Currently priced at ฿12,528, 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 Air China - these airlines can fly you to your destination from ฿15,802 and ฿17,680, 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 ฿13,304. สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ flights start at ฿14,556 while deals on เอทิฮัดแอร์เวย์ start at ฿15,488 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 (92%), EVA Air (91%), แอร์แคนาดา( 91%).

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

    Looking at all options, your cheapest flight can be booked for ฿24,979. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for ฿20,177 on average, our data indicates ฿38,872 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of ฿25,937). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of ฿39,432). 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
Kanchanaburi
Cha-am
Ayutthaya
Sattahip
Pak Chong
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 10 June 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 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
ไห่หนานแอร์ไลน์Cheapest฿12,528Average฿18,881FlexibilityNo cancel feeOn-time61%
Search ไห่หนานแอร์ไลน์ flights
Shenzhen AirlinesCheapest฿15,802Average฿19,459FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Air ChinaCheapest฿17,680Average฿19,713FlexibilityNo cancel feeOn-time67%
Search Air China flights
Air IndiaCheapest฿18,496Average฿21,862FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์Cheapest฿20,573Average฿38,859FlexibilityNo cancel feeOn-time79%
Search สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ flights
เอทิฮัดแอร์เวย์Cheapest฿22,013Average฿26,324FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights
โอมานแอร์Cheapest฿22,407Average฿24,796FlexibilityNo cancel feeOn-time76%
Search โอมานแอร์ flights
Qatar AirwaysCheapest฿23,222Average฿27,535FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Thai AirwaysCheapest฿30,071Average฿40,098FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest฿30,353Average฿34,938FlexibilityNo cancel feeOn-time75%
Search Emirates flights

Fly with Cheapflights

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

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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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