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

Return flights

04 Dec - 07 Dec	Jeju Air	direct
11 Dec - 14 Dec	Jeju Air	direct
12 Dec - 15 Dec	Jeju Air	direct
08 Dec - 15 Dec	Jeju Air	direct
12 Dec - 14 Dec	Jeju Air	direct
19 Dec - 22 Dec	Jeju Air	direct
26 Dec - 28 Dec	Jeju Air	direct
13 Dec - 15 Dec	Jeju Air	direct
26 Dec - 29 Dec	Jeju Air	direct
22 Dec - 26 Dec	Jeju Air	direct
26 Dec - 05 Jan	Jeju Air	direct
31 Dec - 03 Jan	Jeju Air	direct
27 Dec - 03 Jan	Jeju Air	direct
30 Dec - 03 Jan	Jeju Air	direct

Also check the deals for one-way flights from Hiroshima to Seoul in December.

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 December from $168

Return flights