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

Return flights

06 Sep - 15 Sep	LOT
08 Sep - 21 Sep	LOT
09 Sep - 16 Sep	LOT
07 Sep - 15 Sep	LOT
13 Sep - 22 Sep	LOT
13 Sep - 21 Sep	LOT
06 Sep - 14 Sep	LOT
06 Sep - 11 Sep	LOT
01 Sep - 16 Sep	LOT
06 Sep - 09 Sep	LOT
16 Sep - 14 Oct	Air France
25 Sep - 14 Oct	Air France
25 Sep - 16 Oct	Air France
05 Sep - 13 Oct	Etihad Airways
23 Sep - 25 Oct	LOT
29 Sep - 28 Oct	LOT
29 Sep - 09 Oct	LOT
23 Sep - 11 Oct	LOT
29 Sep - 15 Oct	LOT
28 Sep - 08 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 525€

Return flights