AirHint found the following cheapest return flights from Fortaleza (FOR) to Oslo (OSL) in December 2025 (see full year).
Return flights
| 16 Dec - 12 Jan | KLM | ||
| 01 Dec - 14 Dec | GOL Linhas Aéreas | ||
| 17 Dec - 08 Jan | LATAM Airlines Group |
Also check the deals for one-way flights from Fortaleza to Oslo in December.
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