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

Return flights

08 Sep - 23 Oct	Pegasus Airlines
24 Sep - 30 Sep	Wizz Air Malta
04 Sep - 23 Sep	Air India
11 Sep - 24 Sep	Air India
18 Sep - 30 Sep	Air India
11 Sep - 30 Sep	Air India
04 Sep - 01 Oct	Air India
18 Sep - 01 Oct	Air India
04 Sep - 30 Sep	Air India
18 Sep - 25 Sep	Air India
06 Sep - 16 Sep	Air India
13 Sep - 23 Sep	Air India
13 Sep - 24 Sep	Air India
18 Sep - 02 Oct	Air India
11 Sep - 09 Oct	Air India
24 Sep - 09 Oct	Wizz Air Malta
25 Sep - 09 Oct	Air India
11 Sep - 02 Oct	Air India
25 Sep - 17 Oct	Air India
04 Sep - 02 Oct	Air India

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 511€

Return flights