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

Return flights

13 Sep - 13 Oct	China Eastern
16 Sep - 08 Oct	SWISS
09 Sep - 24 Oct	Lufthansa
30 Sep - 20 Oct	Etihad Airways
16 Sep - 16 Oct	SWISS
15 Sep - 15 Oct	easyJet
08 Sep - 10 Oct	China Eastern
09 Sep - 20 Oct	Lufthansa
30 Sep - 07 Oct	Lufthansa
30 Sep - 21 Oct	Lufthansa
03 Sep - 18 Sep	China Eastern
04 Sep - 20 Sep	China Eastern
04 Sep - 09 Sep	China Eastern
01 Sep - 06 Sep	China Eastern
01 Sep - 20 Sep	China Eastern
16 Sep - 25 Sep	China Eastern
03 Sep - 09 Sep	China Eastern
01 Sep - 09 Sep	China Eastern
02 Sep - 09 Sep	China Eastern
01 Sep - 19 Sep	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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Paris to Seoul in September from 514€

Return flights