AirHint found the following cheapest one-way flights from Osaka (KIX) to Seoul (ICN) in January 2026 (see full year).

One-Way flights

27 Jan	Peach	direct
15 Jan	Peach	direct
30 Jan	Jin Air	direct
22 Jan	Peach	direct
10 Jan	Aero K Airlines	direct
12 Jan	Peach	direct
23 Jan	Peach	direct
02 Jan	Jin Air	direct
21 Jan	Jin Air	direct
11 Jan	Jin Air	direct

Also check the deals for return flights from Osaka to Seoul in January.

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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Cheapest one-way flights from Osaka to Seoul in January from 59€

One-Way flights