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

Return flights

24 Aug - 09 Sep	LOT
18 Aug - 27 Aug	LOT
25 Aug - 17 Sep	LOT
27 Aug - 14 Sep	LOT
19 Aug - 02 Sep	LOT
28 Aug - 04 Sep	easyJet
06 Aug - 18 Aug	LOT
28 Aug - 16 Sep	Lufthansa
27 Aug - 31 Aug	easyJet
18 Aug - 24 Aug	LOT
25 Aug - 31 Aug	Vueling Airlines
12 Aug - 24 Aug	LOT
12 Aug - 25 Aug	Vueling Airlines
05 Aug - 12 Aug	LOT
05 Aug - 26 Aug	LOT
04 Aug - 10 Aug	LOT

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 566€

Return flights