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

Return flights

23 Sep - 20 Oct	China Eastern
08 Sep - 17 Sep	Vueling Airlines
22 Sep - 08 Oct	Lufthansa
21 Sep - 11 Oct	Ryanair
09 Sep - 24 Sep	Ryanair
15 Sep - 23 Sep	Vueling Airlines
08 Sep - 10 Oct	Austrian Airlines
17 Sep - 25 Sep	Ryanair
08 Sep - 21 Sep	Volotea
02 Sep - 08 Sep	Shanghai Airlines
15 Sep - 22 Sep	Vueling Airlines
26 Sep - 13 Oct	Ryanair
13 Sep - 22 Sep	Ryanair
10 Sep - 24 Sep	Ryanair
29 Sep - 13 Oct	Lufthansa
08 Sep - 16 Sep	Vueling Airlines
25 Sep - 04 Oct	Ryanair
18 Sep - 02 Oct	Ryanair
19 Sep - 02 Oct	Ryanair
20 Sep - 05 Oct	Lufthansa

Also check the deals for one-way flights from Marseille 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 Marseille to Seoul in September from $596

Return flights