Cheapest one-way flights from Seoul to Osaka in December from $59

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

One-Way flights

23 Dec Peach direct
24 Dec Jeju Air direct
25 Dec Jeju Air direct
28 Dec Peach direct
26 Dec Air Busan
26 Dec Peach direct
27 Dec Peach direct
30 Dec Jeju Air direct
21 Dec Peach direct
22 Dec Eastar Jet

Also check the deals for return 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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