Cheapest return flights from Oslo to Porto in September from 265€

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

17 Sep - 19 Sep Vueling Airlines
08 Sep - 10 Sep Norwegian Air Sweden AOC
17 Sep - 03 Oct Vueling Airlines
05 Sep - 10 Sep Norwegian direct
08 Sep - 10 Sep Norwegian direct
17 Sep - 06 Oct Vueling Airlines
27 Sep - 17 Oct Vueling Airlines
17 Sep - 19 Sep Norwegian direct
27 Sep - 10 Oct Vueling Airlines
13 Sep - 19 Sep Vueling Airlines
17 Sep - 18 Sep Norwegian
13 Sep - 18 Sep Vueling Airlines
08 Sep - 19 Sep Norwegian Air Sweden AOC
05 Sep - 19 Sep Norwegian direct
17 Sep - 03 Oct Norwegian direct
13 Sep - 03 Oct Vueling Airlines
27 Sep - 03 Oct Vueling Airlines
27 Sep - 06 Oct Vueling Airlines
17 Sep - 06 Oct Norwegian direct

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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