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

Return flights

08 Sep - 13 Sep	LOT
01 Sep - 09 Sep	Air France
02 Sep - 09 Sep	Air France
03 Sep - 16 Sep	Lufthansa
01 Sep - 16 Sep	LOT
16 Sep - 07 Oct	LOT
30 Sep - 21 Oct	Lufthansa
08 Sep - 15 Sep	LOT
01 Sep - 07 Sep	LOT
25 Sep - 14 Oct	easyJet
05 Sep - 24 Sep	Lufthansa
09 Sep - 16 Sep	Lufthansa
08 Sep - 21 Sep	LOT
18 Sep - 09 Oct	Air France
29 Sep - 15 Oct	Lufthansa
19 Sep - 09 Oct	Lufthansa
25 Sep - 16 Oct	Lufthansa
29 Sep - 18 Oct	Volotea

Also check the deals for one-way flights from Lyon 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 Lyon to Seoul in September from 617€

Return flights