AirHint found the following cheapest return flights from Porto (OPO) to Oslo (OSL) in July 2026 (see full year).

Return flights

08 Jul - 25 Jul	Norwegian
03 Jul - 06 Jul	Norwegian
01 Jul - 20 Jul	Norwegian	direct
03 Jul - 20 Jul	Norwegian	direct
03 Jul - 11 Jul	Norwegian
01 Jul - 06 Jul	Norwegian
08 Jul - 20 Jul	Norwegian	direct
10 Jul - 25 Jul	Norwegian
01 Jul - 17 Jul	Norwegian	direct
03 Jul - 17 Jul	Norwegian	direct

Also check the deals for one-way flights from Porto to Oslo in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Porto to Oslo in July from $195

Return flights