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

Return flights

09 Sep - 21 Oct	Austrian Airlines
16 Sep - 21 Oct	Austrian Airlines
09 Sep - 24 Oct	Austrian Airlines
22 Sep - 14 Oct	LOT
01 Sep - 11 Sep	LOT
06 Sep - 16 Oct	LOT
07 Sep - 20 Sep	Etihad Airways
11 Sep - 27 Oct	Etihad Airways
11 Sep - 16 Sep	Etihad Airways
16 Sep - 23 Sep	Etihad Airways
15 Sep - 23 Sep	Etihad Airways
13 Sep - 22 Sep	Etihad Airways
02 Sep - 16 Sep	Etihad Airways
23 Sep - 15 Oct	Etihad Airways
05 Sep - 18 Sep	Air France
11 Sep - 18 Sep	Air France
09 Sep - 18 Sep	Air France
28 Sep - 08 Oct	LOT
29 Sep - 09 Oct	LOT
30 Sep - 07 Oct	LOT

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