Cheapest return flights from Porto to Oslo in September from $211

Best time to book flights for Porto (OPO) to Oslo (OSL) flights at AirHint

AirHint found the following cheapest return flights from Porto (OPO) to Oslo (OSL) in September 2025 (see full year).

Return flights

03 Sep - 10 Sep Norwegian
07 Sep - 15 Sep Transavia France
03 Sep - 22 Sep Norwegian
03 Sep - 15 Sep Norwegian
10 Sep - 14 Sep KLM
03 Sep - 22 Sep Norwegian direct
15 Sep - 26 Sep easyJet
08 Sep - 15 Sep Ryanair
29 Sep - 03 Oct easyJet
10 Sep - 22 Sep Norwegian
03 Sep - 24 Sep Norwegian direct
29 Sep - 20 Oct Norwegian
29 Sep - 15 Oct Norwegian
25 Sep - 15 Oct Norwegian Air Sweden AOC
29 Sep - 20 Oct Norwegian direct
29 Sep - 15 Oct Norwegian direct
20 Sep - 03 Oct Vueling Airlines
20 Sep - 10 Oct Vueling Airlines
22 Sep - 03 Oct Norwegian direct
22 Sep - 10 Oct Norwegian direct

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

Skyscanner

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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