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

Return flights

18 Sep - 22 Sep	Air China
15 Sep - 22 Sep	Air China
08 Sep - 22 Sep	Air China
08 Sep - 15 Sep	Air China
19 Sep - 22 Sep	Air China
17 Sep - 24 Sep	Air China
15 Sep - 24 Sep	Air China
16 Sep - 26 Sep	Air China
17 Sep - 27 Sep	Air China
18 Sep - 26 Sep	Air China
22 Sep - 31 Oct	China Southern
15 Sep - 23 Oct	China Southern
15 Sep - 02 Oct	China Southern
18 Sep - 02 Oct	China Southern
22 Sep - 02 Oct	China Southern
23 Sep - 21 Oct	Etihad Airways
23 Sep - 02 Oct	Etihad Airways
17 Sep - 01 Oct	Air China
15 Sep - 01 Oct	Air China
21 Sep - 02 Oct	Air China

Also check the deals for one-way flights from Seoul to Paris 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 Paris in September from 512€

Return flights