How do most travelers feel about Finnair?

The general consensus from 2,908 Cheapflights users is that Finnair is a 5.5/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport (LHR-BKK).

฿24,535+ Finnair Flights from Heathrow to Suvarnabhumi

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

Finnair flights from Heathrow to Suvarnabhumi in 2025

One-way from	฿24,934
Return from	฿24,535
Popular in	July
Cheapest in	May
Average price (all airlines)	฿27,431

Finnair
16/7
1 total stop
38h 00m total
London to Bangkok

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Finnair
4/9-11/9
2 total stops
75h 15m total
London to Bangkok

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Highest demand for flights from London Heathrow to Bangkok Suvarnabhumi; 8% 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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Can I get a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport on Finnair for under ฿900?
There are 1 flights available on Finnair from London Heathrow Airport to Bangkok Suvarnabhumi Airport for under ฿900. These prices can change based on many factors including date and time. To find LHR-BKK flight prices for your dates, click here.
How do most travelers feel about Finnair?
The general consensus from 2,908 Cheapflights users is that Finnair is a 5.5/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to Bangkok Suvarnabhumi Airport (LHR-BKK).

Find Finnair flight deals from Heathrow to Suvarnabhumi

Cheapest Finnair flights from Heathrow to Suvarnabhumi
Explore the most affordable Finnair flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 16 May 2025.

Fri 6/618:10LHR - BKK

2 stops32h 30mFinnair

Wed 11/613:20BKK - LHR

2 stops25h 50mFinnair

Deal found 16/5฿30,494

Travel insights for Finnair flights from Heathrow to Suvarnabhumi

Get recent, data-driven insights about Finnair flights from Heathrow to Suvarnabhumi including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport with Finnair?

Booking with Finnair 75 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.

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

Currently, the most affordable month to book a Finnair flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport in May, with an average price of ฿19,275. Conversely, traveling with Finnair from London Heathrow Airport to Bangkok Suvarnabhumi Airport in December will be the most expensive, with an average cost of ฿35,720. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Rainfall in Suvarnabhumi by month

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.

Temperature in Suvarnabhumi by month

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).

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.

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See what others are saying about Finnair

Finnair

7.6

Good

1,280 reviews

Check prices

Overview

Recent reviews

10.0

Wonderful|May 2025

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

6.0

Okay|May 2025

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

2.0

Poor|Apr 2025

Poor

2.0

Poor|Apr 2025

Poor

2.0

Poor|Dec 2024

Finnair, a large European airline, have a very poor boarding practice whereby they collect every passenger waiting at the gate into an even smaller closed in area after checking passports (again) and boarding cards - then simply open the boarding causing a crowd crush as ALL passengers attempt to board all at once. Surely a more controllable method these days is to board via seat row numbers?

1 out of 427

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

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

Finnair flights from Heathrow to Suvarnabhumi in 2025

Find detailed information about Finnair flights from Heathrow to Suvarnabhumi. Explore the options provided by Finnair to plan your journey from Heathrow to Suvarnabhumi. Data last updated 16 May 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport on Finnair for under ฿900?

How do most travelers feel about Finnair?

Find Finnair flight deals from Heathrow to Suvarnabhumi

Cheapest Finnair flights from Heathrow to SuvarnabhumiExplore the most affordable Finnair flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 16 May 2025.

Explore the most affordable Finnair flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 16 May 2025.

Travel insights for Finnair flights from Heathrow to Suvarnabhumi

Get recent, data-driven insights about Finnair flights from Heathrow to Suvarnabhumi including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport with Finnair?

Use this chart to determine the optimal time to book a return flight from Heathrow to Suvarnabhumi. Price data was last updated on 9 May 2025.

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

Rainfall in Suvarnabhumi by month

Plan your trip to Suvarnabhumi by taking into account the average rainfall totals by month.

Temperature in Suvarnabhumi by month

Plan your trip to Suvarnabhumi by taking into account the average temperature totals 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

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

Complete your trip

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

See what others are saying about Finnair

Overview

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Travel Smart

Cheapest Finnair flights from Heathrow to Suvarnabhumi
Explore the most affordable Finnair flight options available from Heathrow to Suvarnabhumi. Find the lowest fares with prices last updated on 16 May 2025.