Cheapest return flights from Seoul to Osaka in December from $122

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

Return flights

03 Dec - 10 Dec Peach direct
08 Dec - 17 Dec Peach direct
14 Dec - 18 Dec Peach direct
12 Dec - 17 Dec Peach direct
03 Dec - 07 Dec Peach direct
04 Dec - 08 Dec Peach direct
09 Dec - 11 Dec Jeju Air direct
03 Dec - 17 Dec Jin Air direct
03 Dec - 16 Dec Jin Air direct
03 Dec - 09 Dec Jin Air direct
30 Dec - 06 Jan Jeju Air direct
19 Dec - 09 Jan Peach direct
30 Dec - 03 Jan Jeju Air direct
30 Dec - 02 Jan Jeju Air direct
01 Dec - 27 Jan Korean Air direct
02 Dec - 27 Jan Korean Air direct
16 Dec - 06 Jan Jeju Air direct
28 Dec - 02 Jan Jeju Air direct
31 Dec - 04 Jan Jeju Air direct
27 Dec - 02 Jan Jeju Air direct

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