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

Return flights

27 Aug - 27 Sep	Air India
31 Aug - 16 Sep	Air India
20 Aug - 13 Sep	Air India
27 Aug - 20 Sep	Air India
31 Aug - 13 Sep	Air India
17 Aug - 17 Sep	Air India
17 Aug - 14 Sep	Air India
26 Aug - 13 Sep	Air India
31 Aug - 28 Sep	Air India
24 Aug - 13 Sep	Air India
17 Aug - 28 Aug	Etihad Airways
12 Aug - 21 Aug	Air India
11 Aug - 24 Aug	Qatar Airways
12 Aug - 26 Aug	Austrian Airlines
17 Aug - 21 Aug	Air India
18 Aug - 24 Aug	Air India
11 Aug - 23 Aug	Qatar Airways
12 Aug - 23 Aug	Air India
20 Aug - 24 Aug	Air India
10 Aug - 23 Aug	Air India

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 522€

Return flights