Cheapest return flights from Osaka to Seoul in December from $141

AirHint found the following cheapest return flights from Osaka (KIX) to Seoul (GMP) in December 2025 (see full year).

Return flights

18 Dec - 23 Dec Peach direct
05 Dec - 07 Dec Jeju Air direct
06 Dec - 08 Dec Jeju Air direct
03 Dec - 05 Dec Jeju Air direct
04 Dec - 07 Dec Jeju Air direct
08 Dec - 08 Dec Peach direct
05 Dec - 09 Dec Jeju Air direct
06 Dec - 10 Dec Jeju Air direct
03 Dec - 06 Dec Jeju Air direct
20 Dec - 23 Dec Peach direct
23 Dec - 07 Jan Jeju Air direct
16 Dec - 29 Jan Korean Air direct
22 Dec - 12 Jan Asiana Airlines direct
24 Dec - 04 Jan Asiana Airlines direct
25 Dec - 03 Jan Asiana Airlines direct
31 Dec - 07 Jan Jeju Air direct
27 Dec - 05 Jan Jeju Air direct
26 Dec - 02 Jan Jeju Air direct
30 Dec - 05 Jan Jeju Air direct
29 Dec - 07 Jan Jeju Air direct

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

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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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