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

Return flights

30 Aug - 13 Sep	Etihad Airways
31 Aug - 30 Sep	Air India
25 Aug - 25 Sep	Air India
29 Aug - 29 Sep	Air India
27 Aug - 16 Sep	Etihad Airways
28 Aug - 10 Sep	Etihad Airways
28 Aug - 19 Sep	Etihad Airways
28 Aug - 18 Sep	Etihad Airways
30 Aug - 16 Sep	Etihad Airways
28 Aug - 09 Sep	Etihad Airways
12 Aug - 21 Aug	Turkish Airlines
11 Aug - 18 Aug	Saudia
14 Aug - 16 Aug	Saudia
05 Aug - 27 Aug	Etihad Airways
18 Aug - 31 Aug	Air India
14 Aug - 25 Aug	Turkish Airlines
15 Aug - 29 Aug	Oman Air
20 Aug - 29 Aug	Etihad Airways
20 Aug - 25 Aug	ITA Airways
06 Aug - 21 Aug	Etihad Airways

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 $682

Return flights