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

Return flights

19 Sep - 01 Oct	Air China
19 Sep - 26 Sep	Air China
23 Sep - 26 Sep	Air China
25 Sep - 02 Oct	Air China
24 Sep - 01 Oct	Air China
23 Sep - 04 Oct	Air China
23 Sep - 30 Sep	Qatar Airways
22 Sep - 30 Sep	Scandinavian Airlines
26 Sep - 03 Oct	Air China
25 Sep - 30 Sep	Qatar Airways
29 Sep - 14 Oct	Thai AirAsia X
26 Sep - 01 Oct	Air China
30 Sep - 12 Oct	Jin Air
29 Sep - 12 Oct	Eastar Jet
30 Sep - 13 Oct	Korean Air
24 Sep - 30 Sep	Scandinavian Airlines
26 Sep - 30 Sep	Air France
26 Sep - 28 Sep	Qatar Airways

Also check the deals for one-way flights from Seoul to Geneva 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 Geneva in September from $638

Return flights