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
22 Sep - 22 Oct	easyJet
10 Sep - 20 Sep	China Eastern
01 Sep - 21 Sep	Air China
09 Sep - 21 Sep	Air China
04 Sep - 23 Sep	easyJet
08 Sep - 10 Oct	easyJet
11 Sep - 22 Sep	Etihad Airways
23 Sep - 14 Oct	Etihad Airways
16 Sep - 16 Oct	Etihad Airways
21 Sep - 09 Oct	Etihad Airways
04 Sep - 22 Sep	Etihad Airways
03 Sep - 22 Sep	Etihad Airways
09 Sep - 22 Sep	Etihad Airways
10 Sep - 14 Oct	China Eastern
22 Sep - 14 Oct	Etihad Airways
22 Sep - 17 Oct	Etihad Airways
23 Sep - 15 Oct	Etihad Airways
17 Sep - 24 Sep	easyJet
24 Sep - 09 Oct	China Eastern

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 $501

Return flights