Cheapest return flights from Oslo to Porto in May from 121€

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

Return flights

11 May - 20 May Norwegian direct
04 May - 08 May Wizz Air
01 May - 06 May Norwegian direct
25 May - 12 Jun Norwegian direct
18 May - 20 May Norwegian direct
11 May - 22 May Norwegian direct
13 May - 29 Jun Vueling Airlines
13 May - 20 May Vueling Airlines
04 May - 06 May Norwegian direct
15 May - 20 May Norwegian direct
11 May - 29 May Norwegian direct
01 May - 20 May Norwegian direct
25 May - 10 Jun Norwegian direct
20 May - 10 Jun Vueling Airlines
29 May - 12 Jun Norwegian direct
29 May - 10 Jun Norwegian direct
18 May - 05 Jun Norwegian direct
29 May - 17 Jun Norwegian direct
25 May - 05 Jun Norwegian direct
20 May - 05 Jun Vueling Airlines

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

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