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Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from C$ 548

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
15 Jul — 22 Jul1
1 adult
1 adult, Economy, 0 bags

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 15 June 2026.

Mon 2/119:10 p.m.
LHR
-
BKK
1 stop38h 20m
Shenzhen Airlines
Sun 15/1112:10 p.m.
BKK
-
LHR
1 stop38h 00m
Shenzhen Airlines
Deal found 10/6C$ 874
Wed 4/119:10 p.m.
LHR
-
BKK
1 stop22h 05m
Shenzhen Airlines
Sun 15/113:15 a.m.
BKK
-
LHR
1 stop22h 55m
Shenzhen Airlines
Deal found 15/6C$ 877
Sun 1/115:40 p.m.
LHR
-
BKK
1 stop17h 25m
Air China
Fri 13/111:30 a.m.
BKK
-
LHR
1 stop23h 20m
Air China
Deal found 15/6C$ 878
Wed 4/119:00 p.m.
LHR
-
BKK
2 stops58h 55m
China Eastern
Sat 7/111:55 a.m.
BKK
-
LHR
1 stop22h 35m
China Eastern
Deal found 11/6C$ 976
Thu 5/119:00 p.m.
LHR
-
BKK
3 stops58h 55m
China Eastern
Sun 8/111:55 a.m.
BKK
-
LHR
1 stop22h 35m
China Eastern
Deal found 14/6C$ 977
Wed 2/129:00 p.m.
LHR
-
BKK
2 stops34h 55m
China Eastern
Fri 4/126:15 p.m.
BKK
-
LHR
2 stops30h 15m
China Eastern
Deal found 11/6C$ 986
Sat 5/99:20 p.m.
LHR
-
BKK
1 stop21h 20m
China Eastern
Tue 3/111:55 a.m.
BKK
-
LHR
1 stop22h 35m
China Eastern
Deal found 12/6C$ 994
Mon 31/810:05 p.m.
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Sun 13/93:15 a.m.
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 11/6C$ 996
Fri 4/910:05 p.m.
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Thu 17/93:15 a.m.
BKK
-
LHR
1 stop22h 45m
Shenzhen Airlines
Deal found 15/6C$ 998
Fri 4/910:05 p.m.
LHR
-
BKK
1 stop22h 10m
Shenzhen Airlines
Fri 18/93:15 a.m.
BKK
-
LHR
1 stop22h 35m
Shenzhen Airlines
Deal found 14/6C$ 1,001
Wed 9/99:20 p.m.
LHR
-
BKK
1 stop17h 35m
China Eastern
Tue 8/127:50 a.m.
BKK
-
LHR
2 stops40h 40m
China Eastern
Deal found 11/6C$ 1,005

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 15 June 2026.

Round-trip from

C$ 874

One-way from

C$ 548

Popular in

December

Cheapest in

September

Average price

C$ 1,166

Good one-way deal

C$ 969 or less
Shenzhen Airlines
  • Shenzhen Airlines
  • 2/11-17/11
  • 2 total stops
  • 69h 00m total
  • London to Bangkok
Search Deals
Air China
  • Air China
  • 9/9
  • 1 total stop
  • 21h 45m total
  • London to Bangkok
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 102 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a one-way flight from London Heathrow to Bangkok Suvarnabhumi.
Search Deals

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 15 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 round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 9/9

10:05 p.m.-2:15 a.m.

1 stop22h 10m

Bangkok Suvarnabhumi

Tue 29/9

3:15 a.m.-8:00 p.m.

1 stop22h 45m

C$ 994

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 1/11

9:00 p.m.-2:55 p.m.

2 stops34h 55m

Bangkok Suvarnabhumi

Fri 13/11

1:55 a.m.-5:30 p.m.

1 stop22h 35m

C$ 1,036

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 8/9

10:05 p.m.-9:45 a.m.

1 stop29h 40m

Bangkok Suvarnabhumi

Thu 1/10

8:15 p.m.-6:55 a.m.

1 stop16h 40m

C$ 1,106

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 18/9

9:20 p.m.-3:50 p.m.

1 stop36h 30m

Bangkok Suvarnabhumi

Tue 17/11

1:35 p.m.-5:30 p.m.

1 stop34h 55m

C$ 1,116

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 4/9

9:30 a.m.-12:10 p.m.

1 stop20h 40m

Bangkok Suvarnabhumi

Thu 17/9

3:15 a.m.-6:45 p.m.

1 stop21h 30m

C$ 1,140
Quickest round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 12/9

8:45 p.m.-11:50 p.m.

1 stop21h 05m

Bangkok Suvarnabhumi

Wed 30/9

3:15 a.m.-12:45 p.m.

1 stop15h 30m

C$ 1,141

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 9/9

8:55 a.m.-9:50 a.m.

2 stops18h 55m

Bangkok Suvarnabhumi

Wed 30/9

12:35 p.m.-7:55 a.m.

1 stop25h 20m

C$ 1,201

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 11/9

3:30 p.m.-2:50 p.m.

2 stops17h 20m

Bangkok Suvarnabhumi

Wed 30/9

12:35 p.m.-7:55 a.m.

1 stop25h 20m

C$ 1,280

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 24/10

5:30 p.m.-10:40 a.m.

2 stops35h 10m

Bangkok Suvarnabhumi

Sat 7/11

12:35 p.m.-2:35 p.m.

2 stops33h 00m

C$ 1,313

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 4/7

10:05 p.m.-2:15 a.m.

1 stop22h 10m

Bangkok Suvarnabhumi

Sat 1/8

12:10 p.m.-8:00 p.m.

1 stop37h 50m

C$ 1,326

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/6

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of C$ 1,102). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of C$ 1,678). 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 15 June 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 to fly round-trip 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?

    Airlines like Shenzhen Airlines, China Eastern, and Gulf Air fly from London Heathrow Airport to Bangkok Suvarnabhumi Airport in about 22h 10m. The time it takes to get you to your destination can typically vary by up to 12h 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 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 (92%), EVA Air (91%) and Air Canada (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 C$ 940. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for C$ 1,143 on average, our data indicates C$ 1,043 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$ 1,102). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December is currently the most expensive (average of C$ 1,678). 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 Lan
Cha-am
Ko Samet

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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.

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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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