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

Return flights

23 Oct - 24 Oct	Ibex Airlines
14 Oct - 16 Oct	ANA
14 Oct - 17 Oct	ANA
21 Oct - 29 Oct	Ibex Airlines
01 Oct - 08 Oct	Japan Airlines
03 Oct - 06 Oct	ANA
09 Oct - 13 Oct	ANA
02 Oct - 14 Oct	Japan Airlines
02 Oct - 04 Oct	Japan Airlines
12 Oct - 15 Oct	Japan Airlines
25 Oct - 01 Nov	ANA
30 Oct - 01 Nov	Japan Airlines
31 Oct - 03 Nov	Japan Airlines

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Osaka to Seoul in October from $291

Return flights