Cheapest return flights from Seoul to Osaka in December from $136

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

Return flights

23 Dec - 07 Jan Jeju Air direct
23 Dec - 08 Jan Jeju Air direct
24 Dec - 07 Jan Jeju Air direct
23 Dec - 06 Jan Peach direct
26 Dec - 07 Jan Jeju Air direct
29 Dec - 05 Jan Jeju Air direct
24 Dec - 06 Jan Jeju Air direct
29 Dec - 07 Jan Jeju Air direct
27 Dec - 05 Jan Jeju Air direct
28 Dec - 02 Jan Peach direct
23 Dec - 24 Dec Peach direct
23 Dec - 25 Dec Peach direct
23 Dec - 26 Dec Peach direct
17 Dec - 20 Dec Jin Air
21 Dec - 24 Dec Jin Air
21 Dec - 23 Dec Jin Air
22 Dec - 24 Dec T'way Air
17 Dec - 18 Dec T'way Air
26 Dec - 31 Dec Peach direct
17 Dec - 21 Dec Jin Air

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

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