AirHint found the following cheapest return flights from Oslo (OSL) to Porto (OPO) in August 2026 (see full year).
Return flights
| 15 Aug - 17 Aug | Vueling Airlines | ||
| 03 Aug - 17 Aug | Norwegian Air Sweden AOC | ||
| 03 Aug - 17 Aug | Norwegian | direct | |
| 15 Aug - 31 Aug | Vueling Airlines |
Also check the deals for one-way flights from Oslo to Porto in August.
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