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

LHR — BKK
10 Mar — 17 Mar1
1 adult
1 adult, Economy, 0 bags

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.

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 8 February 2026.

One-way from

£434

Return from

£690

Popular in

July

Cheapest in

September

Average price (all airlines)

£645
Thai Airways
  • Thai Airways
  • 28/2
  • Nonstop
  • 11h 25m total
  • London to Bangkok
Thai Airways
  • Thai Airways
  • 22/3-29/3
  • Nonstop
  • 24h 05m total
  • London to Bangkok
Highest demand for flights from London Heathrow to Bangkok Suvarnabhumi; 9% potential price increase.
Best time to find cheap flights from London Heathrow to Bangkok Suvarnabhumi; 2% potential price drop.
Average price for all London Heathrow to Bangkok Suvarnabhumi flights (one-way and round-trip).
  • Can I get a flight from London Heathrow Airport to Bangkok Suvarnabhumi Airport on Thai Airways for under £661?

    Cheapflights users have found 10 Thai Airways flights for under £661 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.

Find Thai Airways flight deals from Heathrow to Suvarnabhumi

Enter your travel dates to find the best prices.

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 8 February 2026.

Sun 22/321:35
LHR
-
BKK
Nonstop11h 25m
Thai Airways
Sun 29/312:35
BKK
-
LHR
Nonstop12h 40m
Thai Airways
Deal found 5/2£690
Mon 23/321:35
LHR
-
BKK
Nonstop11h 25m
Thai Airways
Sun 29/300:30
BKK
-
LHR
Nonstop12h 45m
Thai Airways
Deal found 6/2£699
Tue 24/211:50
LHR
-
BKK
Nonstop11h 25m
Thai Airways
Mon 9/300:05
BKK
-
LHR
Nonstop13h 35m
Thai Airways
Deal found 7/2£703

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Suvarnabhumi. Price data was last updated on 30 January 2026.

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.

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 June, with an average price of £579. Conversely, traveling with Thai Airways from London Heathrow Airport to Bangkok Suvarnabhumi Airport in January will be the most expensive, with an average cost of £626. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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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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 8 February 2026.

See what others are saying about Thai Airways

Read reviews and see what other travellers are saying about their experiences with Thai Airways. 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 Thai Airways for your next flight. Reviews last updated 8 February 2026.
Thai Airways
7.8
Good
382 reviews
Overview

Boarding

7.9

Crew

8.4

Food

7.4

Comfort

7.6

Entertainment

6.8

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