Find flights
Deals
When to book
FAQs

Cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport from C$ 562

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BKK
17 May — 24 May1
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 17 April 2026.

Wed 10/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Wed 17/63:20 p.m.
BKK
-
LHR
1 stop27h 20m
SAUDIA
Deal found 16/4C$ 813
Tue 9/610:10 p.m.
LHR
-
BKK
1 stop19h 55m
SAUDIA
Wed 17/63:20 p.m.
BKK
-
LHR
1 stop27h 20m
SAUDIA
Deal found 16/4C$ 815
Mon 8/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Wed 17/63:20 p.m.
BKK
-
LHR
1 stop27h 20m
SAUDIA
Deal found 16/4C$ 816
Fri 8/510:00 a.m.
LHR
-
BKK
1 stop21h 45m
SAUDIA
Mon 11/51:50 a.m.
BKK
-
LHR
1 stop16h 50m
SAUDIA
Deal found 14/4C$ 817
Fri 12/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Thu 18/63:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 16/4C$ 819
Sat 6/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Sun 14/63:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 16/4C$ 820
Fri 5/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Tue 16/63:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 16/4C$ 822
Fri 29/510:00 a.m.
LHR
-
BKK
1 stop21h 45m
SAUDIA
Thu 18/63:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 15/4C$ 823
Sat 6/64:15 p.m.
LHR
-
BKK
1 stop15h 30m
SAUDIA
Tue 16/63:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 16/4C$ 824
Thu 23/410:10 p.m.
LHR
-
BKK
1 stop19h 55m
SAUDIA
Tue 28/43:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 14/4C$ 828
Tue 28/410:10 p.m.
LHR
-
BKK
1 stop19h 55m
SAUDIA
Tue 5/53:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 17/4C$ 834
Tue 21/410:10 p.m.
LHR
-
BKK
1 stop19h 55m
SAUDIA
Sun 17/53:25 p.m.
BKK
-
LHR
1 stop22h 05m
SAUDIA
Deal found 16/4C$ 835

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 17 April 2026.

Round-trip from

C$ 813

One-way from

C$ 562

Popular in

July

Cheapest in

May

Average price

C$ 1,234

Good round-trip deal

C$ 1,497 or less

Good one-way deal

C$ 1,200 or less
SAUDIA
  • SAUDIA
  • 10/6-17/6
  • 2 total stops
  • 42h 50m total
  • London to Bangkok
Search Deals
SAUDIA
  • SAUDIA
  • 28/4
  • 1 total stop
  • 19h 55m total
  • London to Bangkok
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 182 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Bangkok Suvarnabhumi.
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 17 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 round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 30/4

10:10 p.m.-12:05 a.m.

1 stop19h 55m

Bangkok Suvarnabhumi

Wed 13/5

3:20 p.m.-12:40 p.m.

1 stop75h 20m

C$ 957
Quickest round-trip

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 28/4

9:15 a.m.-6:45 a.m.

1 stop15h 30m

Bangkok Suvarnabhumi

Thu 2/7

9:45 a.m.-6:45 p.m.

1 stop15h 00m

C$ 1,059

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 20/8

2:45 p.m.-11:50 a.m.

1 stop15h 05m

Bangkok Suvarnabhumi

Mon 7/9

3:05 p.m.-7:00 a.m.

1 stop21h 55m

C$ 1,059

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 27/9

8:25 a.m.-1:25 p.m.

2 stops23h 00m

Bangkok Suvarnabhumi

Mon 12/10

7:10 p.m.-7:10 p.m.

1 stop30h 00m

C$ 1,463

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 27/9

8:25 a.m.-1:25 p.m.

2 stops23h 00m

Bangkok Suvarnabhumi

Sat 10/10

7:10 p.m.-6:30 a.m.

1 stop17h 20m

C$ 1,463

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sat 26/9

8:50 p.m.-1:25 p.m.

2 stops34h 35m

Bangkok Suvarnabhumi

Sat 10/10

7:10 p.m.-7:10 p.m.

1 stop30h 00m

C$ 1,463

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 4/6

2:45 p.m.-6:05 p.m.

2 stops21h 20m

Bangkok Suvarnabhumi

Mon 15/6

5:05 a.m.-6:40 p.m.

1 stop19h 35m

C$ 1,528

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Sun 7/6

7:50 p.m.-6:05 p.m.

1 stop16h 15m

Bangkok Suvarnabhumi

Sun 14/6

6:05 p.m.-5:50 p.m.

2 stops53h 45m

C$ 1,558

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Thu 11/6

6:55 p.m.-6:30 p.m.

1 stop17h 35m

Bangkok Suvarnabhumi

Sun 14/6

6:05 p.m.-5:50 p.m.

2 stops53h 45m

C$ 1,558

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 9/6

7:50 p.m.-6:30 p.m.

1 stop16h 40m

Bangkok Suvarnabhumi

Mon 15/6

6:05 p.m.-5:50 p.m.

2 stops29h 45m

C$ 1,558

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 22 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 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 10 April 2026.

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 85 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 C$ 1,103). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of C$ 1,645). 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 17 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 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 SAUDIA, Etihad Airways, and Oman Air fly from London Heathrow Airport to Bangkok Suvarnabhumi Airport in about 15h 30m. The time it takes to get you to your destination can typically vary by up to 7h 30m. 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 (75%), Air Canada (70%) and EVA Air (70%).

  • 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$ 1,140. While the most popular route (London Heathrow - Bangkok Suvarnabhumi) can be booked for C$ 1,687 on average, our data indicates C$ 1,465 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, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport (average of C$ 1,103). Flying from London Heathrow Airport to Bangkok Suvarnabhumi Airport in July is currently the most expensive (average of C$ 1,645). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.