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

Return flights

03 Sep - 09 Sep	China Eastern
19 Sep - 12 Oct	Air China
14 Sep - 21 Sep	Air China
19 Sep - 18 Oct	Air China
03 Sep - 20 Sep	China Eastern
10 Sep - 13 Oct	China Eastern
11 Sep - 13 Oct	Etihad Airways
23 Sep - 10 Oct	easyJet
07 Sep - 21 Sep	Air China
08 Sep - 21 Sep	Air China
04 Sep - 15 Oct	Air China
24 Sep - 12 Oct	Air China
10 Sep - 15 Oct	China Eastern
24 Sep - 21 Oct	Air China
24 Sep - 23 Oct	Air China
09 Sep - 21 Sep	Air China
10 Sep - 17 Sep	China Eastern
10 Sep - 20 Sep	China Eastern
10 Sep - 23 Sep	China Eastern
02 Sep - 22 Sep	Etihad Airways

Also check the deals for one-way flights from Paris 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 Paris to Seoul in September from 405€

Return flights