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

Return flights

23 Sep - 30 Sep	Thai Lion Air
24 Sep - 01 Oct	Thai Lion Air
25 Sep - 02 Oct	Thai Lion Air
30 Sep - 07 Oct	Thai Lion Air
24 Sep - 29 Oct	Thai Lion Air
30 Sep - 06 Oct	Thai AirAsia
21 Sep - 13 Oct	Thai Lion Air
26 Sep - 03 Oct	Thai Lion Air
22 Sep - 30 Sep	Thai AirAsia X
21 Sep - 05 Oct	Nok Air
19 Sep - 26 Sep	Thai Lion Air
20 Sep - 27 Sep	Thai Lion Air
28 Sep - 05 Oct	Thai AirAsia
28 Sep - 02 Oct	Thai AirAsia X

Also check the deals for one-way flights from Bangkok to Zurich 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 Bangkok to Zurich in September from $596

Return flights