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

Return flights

02 Oct - 15 Oct	Jeju Air	direct
15 Oct - 22 Oct	Jeju Air	direct
16 Oct - 21 Oct	Jeju Air	direct
16 Oct - 23 Oct	Jeju Air	direct
28 Oct - 30 Oct	Jeju Air	direct
22 Oct - 24 Oct	Jeju Air	direct
30 Oct - 01 Nov	Jeju Air	direct
31 Oct - 05 Nov	Jeju Air	direct
31 Oct - 04 Nov	Jeju Air	direct
17 Oct - 20 Oct	Jeju Air	direct
31 Oct - 03 Nov	Jeju Air	direct
15 Oct - 18 Oct	Jeju Air	direct
21 Oct - 23 Oct	Jeju Air	direct
16 Oct - 18 Oct	Jeju Air	direct

Also check the deals for one-way flights from Hiroshima 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 Hiroshima to Seoul in October from $123

Return flights