Cheapest return LHR–BKK flights, September

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

Return flights

14 Sep - 22 Oct Gulf Air
08 Sep - 08 Oct Gulf Air
14 Sep - 08 Oct Gulf Air
21 Sep - 18 Oct Gulf Air
19 Sep - 18 Oct Gulf Air
25 Sep - 19 Oct Gulf Air
13 Sep - 23 Oct Gulf Air
03 Sep - 03 Oct Gulf Air
18 Sep - 11 Oct Gulf Air
30 Sep - 07 Oct Gulf Air
04 Sep - 13 Sep Hainan Airlines
07 Sep - 13 Sep Hainan Airlines
13 Sep - 20 Sep Saudia
13 Sep - 24 Sep Saudia
08 Sep - 22 Sep Saudia
15 Sep - 22 Sep Saudia
15 Sep - 24 Sep Saudia
08 Sep - 24 Sep Saudia
13 Sep - 29 Sep Saudia
09 Sep - 24 Sep Saudia

Also check the deals for one-way flights from London to Bangkok in September.

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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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