Cheapest return flights from Porto to Oslo in September from $169

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

26 Sep - 29 Sep easyJet
17 Sep - 21 Sep TAP
26 Sep - 05 Oct TAP
05 Sep - 08 Sep easyJet
24 Sep - 08 Oct Vueling Airlines
10 Sep - 15 Sep Norwegian
27 Sep - 05 Oct KLM
27 Sep - 08 Oct Vueling Airlines
26 Sep - 28 Sep easyJet
27 Sep - 15 Oct Vueling Airlines
24 Sep - 26 Sep Ryanair
24 Sep - 03 Oct Ryanair
26 Sep - 08 Oct Norwegian
12 Sep - 15 Sep Norwegian
26 Sep - 15 Oct Norwegian
08 Sep - 15 Sep Ryanair
15 Sep - 19 Sep Ryanair
10 Sep - 29 Sep Norwegian direct
17 Sep - 08 Oct Norwegian direct
24 Sep - 08 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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