AirHint found the following cheapest return flights from Birmingham (BHX) to Bangkok (BKK) in September 2025 (see full year).

Return flights

04 Sep - 25 Sep	Lufthansa
02 Sep - 15 Sep	Lufthansa
17 Sep - 23 Sep	Lufthansa
01 Sep - 30 Sep	Lufthansa
12 Sep - 29 Sep	Lufthansa
02 Sep - 18 Sep	Lufthansa
02 Sep - 23 Sep	Lufthansa
22 Sep - 29 Sep	Lufthansa
07 Sep - 21 Sep	Lufthansa
01 Sep - 21 Sep	Lufthansa
22 Sep - 06 Oct	Lufthansa
17 Sep - 05 Oct	Lufthansa
02 Sep - 27 Oct	Lufthansa
02 Sep - 28 Oct	Lufthansa
16 Sep - 14 Oct	Lufthansa
30 Sep - 21 Oct	Lufthansa
06 Sep - 05 Oct	Lufthansa
01 Sep - 02 Oct	Lufthansa
14 Sep - 05 Oct	Lufthansa
29 Sep - 06 Oct	Lufthansa

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

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 Birmingham to Bangkok in September from $654

Return flights