AirHint found the following cheapest return flights from Cork (ORK) to Seoul (ICN) in October 2025 (see full year).

Return flights

20 Oct - 02 Nov	Ryanair
21 Oct - 02 Nov	Ryanair
31 Oct - 14 Nov	Ryanair
29 Oct - 12 Nov	Aer Lingus
28 Oct - 09 Nov	Ryanair
20 Oct - 01 Nov	Ryanair
17 Oct - 01 Nov	Ryanair
25 Oct - 08 Nov	Ryanair
21 Oct - 31 Oct	Ryanair
19 Oct - 31 Oct	Ryanair
17 Oct - 31 Oct	Ryanair
18 Oct - 01 Nov	Ryanair

Also check the deals for one-way flights from Cork to Seoul in October.

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 Cork to Seoul in October from 695€

Return flights