Cheapest return OPO–OSL flights, September

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

Return flights

09 Sep - 14 Sep easyJet
21 Sep - 12 Oct Volotea
17 Sep - 29 Sep Ryanair
23 Sep - 26 Sep Ryanair
18 Sep - 30 Sep KLM
16 Sep - 05 Oct Norwegian direct
18 Sep - 05 Oct Norwegian direct
23 Sep - 05 Oct Norwegian direct
23 Sep - 12 Oct Norwegian direct
14 Sep - 05 Oct Norwegian direct
16 Sep - 19 Sep KLM
21 Sep - 05 Oct Norwegian direct
16 Sep - 07 Oct Norwegian direct
18 Sep - 07 Oct Norwegian direct
23 Sep - 14 Oct Norwegian direct
09 Sep - 14 Sep Norwegian direct
09 Sep - 25 Sep Vueling Airlines
09 Sep - 26 Sep Vueling Airlines
16 Sep - 30 Sep Norwegian direct
18 Sep - 30 Sep Norwegian direct

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

Powered by

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Feel free to contact us with any feedback or request another flight research.