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

Return flights

01 Sep - 30 Sep	KLM
20 Sep - 29 Sep	Pegasus Airlines
03 Sep - 17 Sep	KLM
15 Sep - 02 Oct	easyJet
08 Sep - 22 Sep	Pegasus Airlines
16 Sep - 30 Sep	Ryanair
07 Sep - 21 Sep	Pegasus Airlines
24 Sep - 16 Oct	KLM
04 Sep - 20 Sep	Ryanair
03 Sep - 18 Sep	KLM
24 Sep - 11 Oct	KLM
29 Sep - 13 Oct	Pegasus Airlines
17 Sep - 28 Sep	KLM
01 Sep - 27 Sep	easyJet
20 Sep - 14 Oct	Pegasus Airlines
28 Sep - 11 Oct	Ryanair
16 Sep - 14 Oct	Ryanair
22 Sep - 06 Oct	easyJet
10 Sep - 06 Oct	KLM
27 Sep - 12 Oct	Pegasus Airlines

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