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

Return flights

01 Oct - 11 Oct	Ibex Airlines
14 Oct - 16 Oct	ANA
10 Oct - 12 Oct	Ibex Airlines
30 Oct - 01 Nov	ANA
07 Oct - 09 Oct	ANA
13 Oct - 15 Oct	ANA
22 Oct - 23 Oct	ANA
17 Oct - 19 Oct	ANA
10 Oct - 17 Oct	ANA
20 Oct - 26 Oct	ANA
04 Oct - 11 Oct	ANA
31 Oct - 04 Nov	Japan Airlines
25 Oct - 01 Nov	Japan Airlines
30 Oct - 02 Nov	Japan Airlines
29 Oct - 05 Nov	ANA

Also check the deals for one-way flights from Osaka 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 Osaka to Seoul in October from $252

Return flights