AirHint found the following cheapest return flights from Osaka (KIX) to Busan (PUS) in January 2026 (see full year).

Return flights

21 Jan - 25 Jan	Jeju Air	direct
08 Jan - 12 Jan	Jeju Air	direct
20 Jan - 25 Jan	Jeju Air	direct
09 Jan - 11 Jan	Jeju Air	direct
23 Jan - 26 Jan	Jeju Air	direct
11 Jan - 14 Jan	Jeju Air	direct
06 Jan - 09 Jan	Jeju Air	direct
01 Jan - 13 Jan	Jeju Air	direct
09 Jan - 16 Jan	Jeju Air	direct
01 Jan - 14 Jan	Jeju Air	direct

Also check the deals for one-way flights from Osaka to Busan 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 return flights from Osaka to Busan in January from $241

Return flights