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

Return flights

31 Aug - 05 Sep	Air China
27 Aug - 13 Sep	Air China
28 Aug - 06 Sep	Air China
28 Aug - 03 Sep	Air China
28 Aug - 05 Sep	Air China
28 Aug - 07 Sep	Air China
28 Aug - 29 Sep	Air China
27 Aug - 10 Sep	Air China
28 Aug - 08 Sep	Air China
28 Aug - 09 Sep	Air China
23 Aug - 25 Aug	China Eastern
22 Aug - 28 Aug	Wizz Air UK
20 Aug - 25 Aug	Norwegian
20 Aug - 24 Aug	Norwegian
21 Aug - 24 Aug	Wizz Air UK
22 Aug - 24 Aug	Wizz Air UK
24 Aug - 28 Aug	Air China
19 Aug - 24 Aug	Wizz Air UK
22 Aug - 31 Aug	Wizz Air UK
23 Aug - 24 Aug	Turkmenistan Airlines

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from London to Bangkok in August from 436€

Return flights