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

Return flights

01 Sep - 10 Sep	LOT
01 Sep - 17 Sep	LOT
15 Sep - 22 Sep	LOT
28 Sep - 11 Oct	LOT
14 Sep - 12 Oct	easyJet
11 Sep - 18 Sep	easyJet
07 Sep - 12 Sep	Transavia France
02 Sep - 09 Sep	LOT
07 Sep - 15 Sep	Transavia France
01 Sep - 07 Sep	Volotea
02 Sep - 16 Sep	Vueling Airlines
06 Sep - 16 Sep	easyJet
26 Sep - 12 Oct	Volotea
22 Sep - 02 Oct	Volotea
15 Sep - 02 Oct	easyJet
27 Sep - 04 Oct	easyJet
16 Sep - 02 Oct	easyJet
15 Sep - 03 Oct	Vueling Airlines
17 Sep - 03 Oct	easyJet

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 566€

Return flights