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

Return flights

17 Sep - 08 Oct	Austrian Airlines
05 Sep - 07 Sep	Saudia
04 Sep - 13 Sep	Etihad Airways
01 Sep - 17 Sep	Etihad Airways
18 Sep - 25 Sep	Etihad Airways
01 Sep - 28 Sep	Etihad Airways
07 Sep - 25 Sep	Etihad Airways
02 Sep - 11 Sep	Etihad Airways
01 Sep - 08 Sep	Etihad Airways
03 Sep - 17 Sep	Etihad Airways
01 Sep - 07 Sep	Etihad Airways
16 Sep - 01 Oct	Etihad Airways
17 Sep - 01 Oct	Etihad Airways
16 Sep - 03 Oct	Etihad Airways
24 Sep - 01 Oct	Etihad Airways
11 Sep - 02 Oct	Qatar Airways
25 Sep - 12 Oct	Condor
27 Sep - 14 Oct	Condor
04 Sep - 14 Oct	Condor
01 Sep - 14 Oct	Saudia

Also check the deals for one-way flights from Zurich 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 Zurich to Bangkok in September from 258€

Return flights