AirHint found the following cheapest one-way flights from Oslo (OSL) to Istanbul (IST) in October 2026 (see full year).
One-Way flights
| 11 Oct | Pegasus Airlines | direct | |
| 15 Oct | Norwegian | ||
| 15 Oct | Turkish Airlines | direct | |
| 29 Oct | Lufthansa |
Also check the deals for return flights from Oslo to Istanbul in October.
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