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

Return flights

19 Sep - 22 Sep	Pegasus Airlines
15 Sep - 29 Sep	Pegasus Airlines
02 Sep - 12 Sep	Pegasus Airlines
16 Sep - 30 Sep	Turkish Airlines
10 Sep - 22 Sep	Pegasus Airlines
29 Sep - 03 Oct	Pegasus Airlines
29 Sep - 06 Oct	Turkish Airlines
28 Sep - 05 Oct	Turkish Airlines
29 Sep - 09 Oct	Pegasus Airlines
09 Sep - 17 Sep	Turkish Airlines
13 Sep - 26 Sep	British Airways
24 Sep - 07 Oct	British Airways
04 Sep - 19 Sep	British Airways
01 Sep - 16 Sep	flydubai
02 Sep - 24 Sep	Turkish Airlines
28 Sep - 03 Oct	British Airways
30 Sep - 17 Oct	British Airways

Also check the deals for one-way flights from Basel 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 Basel to Bangkok in September from 546€

Return flights