AirHint found the following cheapest return flights from Atlanta (ATL) to Oslo (OSL) in December 2025 (see full year).
Return flights
| 09 Dec - 17 Dec | Finnair | ||
| 14 Dec - 26 Dec | Air France | ||
| 27 Dec - 07 Jan | Air France | ||
| 20 Dec - 10 Jan | Frontier Airlines | ||
| 22 Dec - 27 Dec | Lufthansa | ||
| 13 Dec - 03 Jan | Spirit Airlines |
Also check the deals for one-way flights from Atlanta to Oslo in December.
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