AirHint found the following cheapest return flights from Porto (OPO) to Oslo (OSL) in August 2026 (see full year).
Return flights
| 21 Aug - 28 Aug | Norwegian | direct | |
| 14 Aug - 21 Aug | Norwegian | direct | |
| 21 Aug - 21 Aug | KLM | ||
| 14 Aug - 28 Aug | Norwegian | direct | |
| 22 Aug - 22 Aug | TAP |
Also check the deals for one-way flights from Porto to Oslo in August.
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