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

Return flights

16 Sep - 21 Sep	Lufthansa
15 Sep - 21 Sep	Lufthansa
09 Sep - 22 Sep	Lufthansa
16 Sep - 24 Sep	Lufthansa
15 Sep - 19 Sep	Lufthansa
15 Sep - 22 Sep	Lufthansa
09 Sep - 16 Sep	Lufthansa
16 Sep - 25 Sep	Lufthansa
09 Sep - 18 Sep	Lufthansa
16 Sep - 18 Sep	Lufthansa
23 Sep - 02 Oct	Etihad Airways
11 Sep - 02 Oct	Etihad Airways
23 Sep - 05 Oct	Etihad Airways
18 Sep - 04 Oct	Finnair
20 Sep - 05 Oct	Etihad Airways
24 Sep - 02 Oct	Finnair
22 Sep - 06 Oct	Etihad Airways
24 Sep - 03 Oct	Finnair
24 Sep - 01 Oct	Etihad Airways
25 Sep - 02 Oct	Finnair

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

Return flights