Cheapest one-way flights from Seoul to Osaka in December from $41

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

One-Way flights

09 Dec Peach direct
10 Dec Peach direct
03 Dec Peach direct
04 Dec Peach direct
02 Dec Peach direct
11 Dec Jeju Air direct
01 Dec Jin Air
22 Dec Jeju Air direct
18 Dec Jeju Air direct
30 Dec Jeju Air direct

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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