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

Return flights

16 Sep - 21 Oct	Etihad Airways
23 Sep - 14 Oct	Etihad Airways
15 Sep - 18 Sep	Etihad Airways
17 Sep - 30 Sep	Etihad Airways
30 Sep - 09 Oct	Etihad Airways
30 Sep - 06 Oct	Etihad Airways
30 Sep - 14 Oct	Etihad Airways
24 Sep - 09 Oct	Etihad Airways
23 Sep - 08 Oct	KLM
24 Sep - 08 Oct	Etihad Airways
29 Sep - 08 Oct	KLM
22 Sep - 13 Oct	SWISS
21 Sep - 30 Sep	Etihad Airways
15 Sep - 22 Sep	easyJet
15 Sep - 20 Sep	easyJet
16 Sep - 20 Sep	Qatar Airways
16 Sep - 24 Sep	Qatar Airways
22 Sep - 25 Sep	easyJet
16 Sep - 23 Sep	easyJet
16 Sep - 19 Sep	easyJet

Also check the deals for one-way flights from Zurich to Seoul 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 Seoul in September from 520€

Return flights