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

Currently, the most affordable month to book a Thai Airways flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport in October, with an average price of £675. Conversely, traveling with Thai Airways from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December will be the most expensive, with an average cost of £1,118. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Weekly Thai Airways flight availability from London Heathrow Airport to Bangkok Suvarnabhumi Airport

The most Thai Airways flights from LHR to BKK are scheduled on a Monday (3 on average). You will have fewer Thai Airways flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

In terms of precipitation, rainfall in Bangkok Suvarnabhumi Airport ranges from 10.0 - 320.0 inches per month. September is typically the wettest month, when rainfall can reach 320.0 mm. January is typically the driest time to visit Bangkok Suvarnabhumi Airport when rainfall is around 10.0 mm.

If weather is an important factor for your trip to Bangkok Suvarnabhumi Airport, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.0 C).

£534+ Thai Airways Flights from Heathrow to Suvarnabhumi

Q: How far ahead should I book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport with Thai Airways?

Booking with Thai Airways 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Cheapflights users flying from London to Bangkok on Thai Airways typically fly into Bangkok Suvarnabhumi and depart from London Heathrow. Select your dates above for pricing.

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Cheapest Thai Airways flights from Heathrow to Suvarnabhumi
Explore the most affordable Thai Airways flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 6 June 2026.

Mon 6/712:30

LHR

BKK

Nonstop11h 30m

Thai Airways

Sun 19/700:45

BKK

LHR

Nonstop12h 30m

Thai Airways

Deal found 2/6£882

Mon 6/712:30

LHR

BKK

Nonstop11h 30m

Thai Airways

Sat 18/700:45

BKK

LHR

Nonstop12h 30m

Thai Airways

Deal found 1/6£886

Tue 9/621:25

LHR

BKK

Nonstop11h 35m

Thai Airways

Thu 18/612:45

BKK

LHR

Nonstop12h 30m

Thai Airways

Deal found 6/6£894

Can I get a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport on Thai Airways for under £672?
Cheapflights users have found 9 Thai Airways flights for under £672 on the LHR-BKK route. Prices on flights to Bangkok Suvarnabhumi Airport from London Heathrow Airport can vary based on many factors including dates. To look at price based on your preferred dates, click here.

Thai Airways flights from Heathrow to Suvarnabhumi in 2026

One-way from	£534
Return from	£849
Popular in	December
Cheapest in	September
Average price (all airlines)	£613

Thai Airways
18/10
Nonstop
11h 35m total
London to Bangkok

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Thai Airways
13/9-25/9
Nonstop
24h 00m total
London to Bangkok

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Highest demand for flights from London Heathrow to Bangkok Suvarnabhumi; 5% potential price increase.

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Best time to find cheap flights from London Heathrow to Bangkok Suvarnabhumi; 2% potential price drop.

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Average price for all London Heathrow to Bangkok Suvarnabhumi flights (one-way and round-trip).

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When is the best time to book a flight to Bangkok Suvarnabhumi Airport with Thai Airways?

The best time to book a flight to Bangkok Suvarnabhumi Airport with Thai Airways is 90 days before departure. On average, fares are higher if you book 74 days before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Bangkok Suvarnabhumi Airport?

For Economy class flights, the cheapest month to fly this route is October. The most expensive months are December and July.

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.

LHR-BKK

Estimated return price

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Thai Airways flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport (LHR - BKK)

Cheapflights users flying from London to Bangkok on Thai Airways typically fly into Bangkok Suvarnabhumi and depart from London Heathrow. Select your dates above for pricing.

Find Thai Airways flight deals from Heathrow to Suvarnabhumi

Cheapest Thai Airways flights from Heathrow to SuvarnabhumiExplore the most affordable Thai Airways flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 6 June 2026.

Explore the most affordable Thai Airways flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 6 June 2026.

Best Thai Airways flights from Heathrow to SuvarnabhumiDiscover carefully curated Thai Airways flight deals from Heathrow to Suvarnabhumi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Discover carefully curated Thai Airways flight deals from Heathrow to Suvarnabhumi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Direct Thai Airways flights from Heathrow to SuvarnabhumiExplore direct Thai Airways flight options from Heathrow to Suvarnabhumi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Explore direct Thai Airways flight options from Heathrow to Suvarnabhumi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Last-minute Thai Airways flights from Heathrow to SuvarnabhumiDiscover last-minute Thai Airways flight deals from Heathrow to Suvarnabhumi. Data last updated 6 June 2026 and is based on user searches.

Discover last-minute Thai Airways flight deals from Heathrow to Suvarnabhumi. Data last updated 6 June 2026 and is based on user searches.

One-way Thai Airways flights to SuvarnabhumiSearch for one-way Thai Airways flight options to Suvarnabhumi. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.

Search for one-way Thai Airways flight options to Suvarnabhumi. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.

Can I get a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport on Thai Airways for under £672?

Thai Airways flights from Heathrow to Suvarnabhumi in 2026

Find detailed information about Thai Airways flights from Heathrow to Suvarnabhumi. Explore the options provided by Thai Airways to plan your journey from Heathrow to Suvarnabhumi. Data last updated 6 June 2026.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

When is the best time to book a flight to Bangkok Suvarnabhumi Airport with Thai Airways?

Which month is the cheapest to fly Economy class from London Heathrow Airport to Bangkok Suvarnabhumi Airport?

Weekly Thai Airways flight availability from London Heathrow Airport to Bangkok Suvarnabhumi Airport

Rainfall in Suvarnabhumi by month

Temperature in Suvarnabhumi by month

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.

Browse thousands of different options on Cheapflights for your next trip

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Fly from Heathrow to Suvarnabhumi on another airline

Consider alternative airlines that service the Suvarnabhumi area. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Other Thai Airways flights from Heathrow

Browse through other Thai Airways flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Complete your trip

Complete your trip to Suvarnabhumi by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines servicing Heathrow and Suvarnabhumi

Choose from other airlines serving Heathrow and Suvarnabhumi.

Other popular destinations in Asia

If Suvarnabhumi is not for you, choose from these other destinations located in Asia. Flight routes are based on user searches made on Cheapflights and were last updated on 6 June 2026.

Popular flights with Thai Airways

Browse through some of the most popular routes that Thai Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 6 June 2026.

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Cheapest Thai Airways flights from Heathrow to Suvarnabhumi
Explore the most affordable Thai Airways flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 6 June 2026.

Best Thai Airways flights from Heathrow to Suvarnabhumi
Discover carefully curated Thai Airways flight deals from Heathrow to Suvarnabhumi that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 June 2026.

Direct Thai Airways flights from Heathrow to Suvarnabhumi
Explore direct Thai Airways flight options from Heathrow to Suvarnabhumi based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 June 2026.

Last-minute Thai Airways flights from Heathrow to Suvarnabhumi
Discover last-minute Thai Airways flight deals from Heathrow to Suvarnabhumi. Data last updated 6 June 2026 and is based on user searches.

One-way Thai Airways flights to Suvarnabhumi
Search for one-way Thai Airways flight options to Suvarnabhumi. Find affordable one-way fares based on user searches. Data last updated 6 June 2026.