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

Return flights

22 Aug - 21 Sep	ITA Airways
27 Aug - 14 Sep	ITA Airways
20 Aug - 11 Sep	ITA Airways
31 Aug - 14 Sep	ITA Airways
31 Aug - 09 Sep	ITA Airways
25 Aug - 14 Sep	ITA Airways
19 Aug - 26 Aug	Etihad Airways
24 Aug - 14 Sep	ITA Airways
20 Aug - 17 Sep	Etihad Airways
13 Aug - 17 Sep	Saudia
25 Aug - 17 Sep	Etihad Airways
16 Aug - 23 Aug	KLM
13 Aug - 18 Aug	Saudia
08 Aug - 21 Aug	Air Serbia
01 Aug - 07 Aug	Air Serbia
15 Aug - 27 Aug	Air Serbia
06 Aug - 21 Aug	LOT
05 Aug - 12 Aug	Scandinavian Airlines
06 Aug - 23 Aug	LOT
01 Aug - 20 Aug	Air Serbia

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 568€

Return flights