AirHint found the following cheapest return flights from Osaka (ITM) to Busan (PUS) in December 2025 (see full year).
Return flights
| 30 Dec - 06 Jan | ANA | ||
| 03 Dec - 05 Dec | ANA | ||
| 30 Dec - 01 Jan | ANA | ||
| 18 Dec - 25 Dec | ANA |
Also check the deals for one-way flights from Osaka to Busan in December.
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