AirHint found the following cheapest return flights from London (LON) to Bangkok (BKK) in August 2026 (see full year).

Return flights

31 Aug - 07 Sep	Shenzhen Airlines
30 Aug - 06 Sep	Shenzhen Airlines
29 Aug - 11 Sep	Shenzhen Airlines
26 Aug - 09 Sep	SWISS
02 Aug - 16 Aug	Kuwait Airways
02 Aug - 23 Aug	Kuwait Airways
09 Aug - 30 Aug	Kuwait Airways
05 Aug - 28 Aug	Kuwait Airways
02 Aug - 30 Aug	Kuwait Airways
04 Aug - 11 Aug	Saudia
07 Aug - 30 Aug	Kuwait Airways
07 Aug - 23 Aug	Kuwait Airways
04 Aug - 25 Aug	Etihad Airways
20 Aug - 27 Aug	Saudia
16 Aug - 01 Sep	Saudia
18 Aug - 01 Sep	Saudia
13 Aug - 10 Sep	Saudia
20 Aug - 03 Sep	Saudia
20 Aug - 08 Sep	Saudia
19 Aug - 07 Sep	Finnair

Also check the deals for one-way flights from London to Bangkok in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Bangkok in August from $622

Return flights