AirHint found the following cheapest return flights from Istanbul (IST) to Oslo (OSL) in August 2026 (see full year).
Return flights
| 31 Aug - 05 Sep | airBaltic | ||
| 31 Aug - 05 Sep | Turkish Airlines | direct | |
| 07 Aug - 13 Aug | Air Serbia | ||
| 02 Aug - 09 Aug | Norwegian | direct |
Also check the deals for one-way flights from Istanbul to Oslo in August.
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