AirHint found the following cheapest return flights from London (LGW) to Bangkok (BKK) in August 2025 (see full year).

Return flights

20 Aug - 12 Sep	Wizz Air UK
21 Aug - 12 Sep	Wizz Air UK
31 Aug - 14 Sep	Wizz Air Malta
20 Aug - 11 Sep	Wizz Air UK
18 Aug - 09 Sep	Wizz Air UK
26 Aug - 24 Sep	Wizz Air Malta
20 Aug - 19 Sep	Wizz Air UK
21 Aug - 19 Sep	Wizz Air UK
24 Aug - 12 Sep	Wizz Air UK
19 Aug - 19 Sep	Wizz Air UK
16 Aug - 23 Aug	Turkmenistan Airlines
10 Aug - 19 Aug	easyJet
06 Aug - 09 Aug	easyJet
06 Aug - 19 Aug	easyJet
06 Aug - 25 Aug	easyJet
11 Aug - 25 Aug	easyJet
06 Aug - 12 Aug	easyJet
08 Aug - 10 Aug	Wizz Air UK
16 Aug - 21 Aug	Turkmenistan Airlines
11 Aug - 13 Aug	Wizz Air UK

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 $634

Return flights