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

Return flights

31 Aug - 13 Sep	LOT
29 Aug - 13 Sep	LOT
25 Aug - 16 Sep	LOT
18 Aug - 30 Aug	LOT
25 Aug - 17 Sep	Lufthansa
30 Aug - 20 Sep	Air France
15 Aug - 23 Aug	LOT
30 Aug - 13 Sep	Lufthansa
04 Aug - 23 Aug	LOT
20 Aug - 27 Aug	LOT
31 Aug - 12 Sep	Lufthansa
03 Aug - 23 Aug	LOT
12 Aug - 01 Sep	Lufthansa
13 Aug - 01 Sep	Lufthansa
07 Aug - 14 Aug	Lufthansa
07 Aug - 22 Aug	Lufthansa
07 Aug - 23 Aug	Lufthansa
08 Aug - 27 Aug	Lufthansa
01 Aug - 03 Sep	Lufthansa
03 Aug - 14 Aug	easyJet

Also check the deals for one-way flights from Lyon to Seoul in August.

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 August from 617€

Return flights