Cheapest return flights from Oslo to Porto in September from $215

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

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

Return flights

19 Sep - 21 Sep Volotea
17 Sep - 19 Sep easyJet
01 Sep - 10 Sep Ryanair
17 Sep - 08 Oct Vueling Airlines
01 Sep - 03 Sep Norwegian Air Sweden AOC
22 Sep - 10 Oct Vueling Airlines
22 Sep - 08 Oct Vueling Airlines
22 Sep - 10 Oct Norwegian direct
22 Sep - 08 Oct Norwegian direct
24 Sep - 10 Oct Norwegian direct
24 Sep - 08 Oct Norwegian direct
20 Sep - 10 Oct Vueling Airlines
20 Sep - 08 Oct Vueling Airlines
15 Sep - 19 Sep Vueling Airlines
01 Sep - 03 Sep Norwegian direct
22 Sep - 13 Oct Vueling Airlines
01 Sep - 10 Sep Norwegian direct
01 Sep - 15 Sep Norwegian Air Sweden AOC
17 Sep - 19 Sep Norwegian direct
01 Sep - 08 Sep Norwegian Air Sweden AOC

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