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

Return flights

11 Sep - 26 Sep	T'way Air
11 Sep - 18 Sep	T'way Air
11 Sep - 25 Sep	T'way Air
11 Sep - 23 Sep	T'way Air
10 Sep - 24 Sep	Jeju Air
16 Sep - 23 Sep	T'way Air
06 Sep - 13 Sep	T'way Air
07 Sep - 21 Sep	T'way Air
06 Sep - 14 Sep	T'way Air
11 Sep - 24 Sep	Vietnam Airlines
28 Sep - 01 Oct	Emirates
28 Sep - 10 Oct	Air France

Also check the deals for one-way flights from Seoul to Plaisance 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 Seoul to Plaisance in September from $877

Return flights