AirHint found the following cheapest return flights from Osaka (KIX) to Bucharest (OTP) in December 2025 (see full year).
Return flights
| 16 Dec - 06 Jan | KLM | ||
| 23 Dec - 27 Dec | KLM | ||
| 10 Dec - 17 Dec | Air France | ||
| 14 Dec - 04 Jan | KLM |
Also check the deals for one-way flights from Osaka to Bucharest in December.
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