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

Return flights

16 Sep - 24 Sep	Air China
17 Sep - 22 Sep	Air China
11 Sep - 19 Sep	Air China
11 Sep - 15 Sep	Air China
14 Sep - 22 Sep	Air China
19 Sep - 24 Sep	Air China
04 Sep - 17 Sep	China Eastern
18 Sep - 20 Sep	Air China
02 Sep - 08 Sep	Air China
02 Sep - 13 Sep	Air China
04 Sep - 29 Oct	Etihad Airways
24 Sep - 16 Oct	Air China
27 Sep - 02 Oct	Ethiopian Airlines
30 Sep - 14 Oct	Etihad Airways
29 Sep - 04 Oct	KLM
25 Sep - 06 Oct	Air China
30 Sep - 13 Oct	Scat Airlines
27 Sep - 07 Oct	Ethiopian Airlines
23 Sep - 09 Oct	Ethiopian Airlines
25 Sep - 09 Oct	Ethiopian Airlines

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 $557

Return flights