AirHint found the following cheapest return flights from Oulu (OUL) to Frankfurt (FRA) in December 2025 (see full year).
Return flights
| 01 Dec - 05 Dec | Finnair | ||
| 16 Dec - 19 Dec | Finnair | ||
| 31 Dec - 03 Jan | Finnair | ||
| 22 Dec - 25 Dec | Finnair |
Also check the deals for one-way flights from Oulu to Frankfurt in December.
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