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

LHR — BKK
24 Apr — 1 May1
1 adult
1 adult, Economy, 0 bags

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 2026

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 25 March 2026.

One-way from

฿22,920

Return from

฿32,799

Popular in

July

Cheapest in

May

Average price (all airlines)

฿30,060
Finnair
  • Finnair
  • 23/5
  • 1 total stop
  • 31h 20m total
  • London to Bangkok
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Finnair
  • Finnair
  • 26/8-16/9
  • 3 total stops
  • 43h 35m total
  • London to Bangkok
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Highest demand for flights from London Heathrow to Bangkok Suvarnabhumi; 9% 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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Find Finnair flight deals from Heathrow to Suvarnabhumi

Enter your travel dates to find the best prices.

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 25 March 2026.

Mon 27/416:10
LHR
-
BKK
1 stop31h 20m
Finnair
Wed 13/507:05
BKK
-
LHR
1 stop19h 35m
Finnair
Deal found 24/3฿36,907
Wed 29/416:10
LHR
-
BKK
2 stops26h 00m
Finnair
Fri 4/1213:05
BKK
-
LHR
2 stops27h 05m
Finnair
Deal found 23/3฿38,308
Thu 16/418:10
LHR
-
BKK
2 stops33h 50m
Finnair
Mon 11/507:05
BKK
-
LHR
1 stop19h 35m
Finnair
Deal found 20/3฿38,472

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 20 March 2026.

Booking with Finnair 62 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.

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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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 25 March 2026.
EVA Air flights from London Heathrow to Bangkok Suvarnabhumi

See what others are saying about Finnair

Read reviews and see what other travellers are saying about their experiences with Finnair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Finnair for your next flight. Reviews last updated 25 March 2026.
Finnair
7.7
Good
1,374 reviews
Check prices
Overview

Boarding

7.7

Entertainment

6.9

Comfort

7.5

Crew

8.2

Food

6.7

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