Cheapest return flights from Seoul to Osaka in December from $100

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

Return flights

23 Dec - 06 Jan Eastar Jet direct
24 Dec - 06 Jan Eastar Jet direct
24 Dec - 07 Jan T'way Air direct
24 Dec - 08 Jan T'way Air direct
25 Dec - 07 Jan T'way Air direct
26 Dec - 02 Jan Air Seoul, Inc direct
23 Dec - 08 Jan Eastar Jet direct
26 Dec - 08 Jan Eastar Jet direct
23 Dec - 05 Jan Eastar Jet direct
26 Dec - 05 Jan Eastar Jet direct
23 Dec - 31 Dec T'way Air direct
23 Dec - 24 Dec Jeju Air direct
26 Dec - 31 Dec Eastar Jet direct
26 Dec - 30 Dec Eastar Jet direct
25 Dec - 31 Dec T'way Air direct
24 Dec - 30 Dec T'way Air direct
23 Dec - 25 Dec Jeju Air direct
24 Dec - 25 Dec Jeju Air direct
27 Dec - 31 Dec Peach direct
23 Dec - 30 Dec Eastar Jet direct

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

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