Flights from London Heathrow to Bangkok with Thai Airways

Our cheapest offers for flights from London Heathrow to Bangkok

Here you can compare cheap flights from London Heathrow (LHR) to Bangkok (BKK) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Bangkok. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
London Heathrow
Bangkok
Outbound
03/07/26
direct
TG0917
11h 35min
Return
25/07/26
direct
TG0916
12h 20min
Thai Airways ?
£705
London Heathrow
Bangkok
Outbound
16/10/25
direct
TG0911
11h 30min
Return
14/11/25
direct
TG0916
13h 15min
Thai Airways
£934
Prices based on recent searches, subject to last-minute changes
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Important flight information

Flight information: London Heathrow - Bangkok

Cheapest outbound flight from 338,52 £
Outbound and return from 360,97 £
Flight duration min. 11:25 / max. 11:30
Return flight duration min. 13:05/ max. 13:15
Distance 9588 km
Flights per week 32
Departure airport Airport London Heathrow (LHR)
Arrival airport Airport Bangkok Suvarnabhumi (BKK)
Destination country Flights to Thailand
Alternative routes to Thailand
Alternative flights to Bangkok
Popular destinations for onward travel
Flight destinations with a similar price