AirHint found the following cheapest one-way flights from Ontario (ONT) to Oslo (OSL) in January 2026 (see full year).
One-Way flights
| 16 Jan | Delta | ||
| 06 Jan | Iberia | ||
| 09 Jan | British Airways | ||
| 01 Jan | Iberia |
Also check the deals for return flights from Ontario to Oslo in January.
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