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

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

Return flights

11 May - 16 May Ryanair
27 May - 12 Jun Vueling Airlines
06 May - 08 May Vueling Airlines
27 May - 12 Jun Norwegian direct
04 May - 08 May easyJet
02 May - 08 May Vueling Airlines
29 May - 12 Jun Norwegian direct
11 May - 22 May Ryanair
27 May - 10 Jun TAP
09 May - 16 May Norwegian Air Sweden AOC
29 May - 14 Jun Scandinavian Airlines
11 May - 17 May easyJet
25 May - 12 Jun Norwegian Air Sweden AOC
11 May - 18 May Ryanair
04 May - 08 May Norwegian direct
25 May - 12 Jun Norwegian direct
09 May - 15 May Norwegian Air Sweden AOC
18 May - 05 Jun Norwegian direct
27 May - 05 Jun Vueling Airlines
27 May - 10 Jun Norwegian direct

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

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