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

Return flights

01 Sep - 10 Sep	SWISS
02 Sep - 17 Sep	SWISS
28 Sep - 23 Oct	SWISS
04 Sep - 17 Sep	Lufthansa
03 Sep - 17 Sep	easyJet
28 Sep - 16 Oct	Etihad Airways
02 Sep - 14 Sep	easyJet
24 Sep - 22 Oct	easyJet
25 Sep - 09 Oct	Etihad Airways
23 Sep - 16 Oct	Etihad Airways
30 Sep - 16 Oct	Etihad Airways
30 Sep - 14 Oct	Etihad Airways
15 Sep - 09 Oct	Etihad Airways
25 Sep - 23 Oct	Etihad Airways
30 Sep - 28 Oct	Etihad Airways
08 Sep - 17 Sep	Lufthansa
10 Sep - 17 Sep	Lufthansa
04 Sep - 16 Sep	Etihad Airways
01 Sep - 17 Sep	Lufthansa
01 Sep - 08 Sep	Lufthansa

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 $596

Return flights