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

Return flights

08 Sep - 18 Sep	China Eastern
10 Sep - 17 Sep	Air China
08 Sep - 19 Sep	Air China
15 Sep - 12 Oct	Air China
07 Sep - 10 Sep	SWISS
22 Sep - 11 Oct	Air China
13 Sep - 19 Sep	Air China
09 Sep - 23 Sep	SWISS
08 Sep - 21 Sep	Air China
26 Sep - 17 Oct	Air China
15 Sep - 21 Sep	China Eastern
15 Sep - 22 Sep	Air China
07 Sep - 18 Sep	SWISS
19 Sep - 10 Oct	China Eastern
25 Sep - 09 Oct	Etihad Airways
24 Sep - 01 Oct	Air China
26 Sep - 09 Oct	Air China
22 Sep - 07 Oct	Air China
25 Sep - 01 Oct	Air China
29 Sep - 12 Oct	Air China

Also check the deals for one-way flights from Geneva 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 Geneva to Seoul in September from 461€

Return flights