Cheapest return flights from Oslo to Porto in May from 141€

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
11 May - 13 May Norwegian direct
11 May - 29 May Norwegian direct
27 May - 05 Jun Vueling Airlines
27 May - 05 Jun Norwegian direct
06 May - 20 May Vueling Airlines
27 May - 15 Jun Vueling Airlines
25 May - 05 Jun Norwegian direct
06 May - 15 May Vueling Airlines
15 May - 20 May Norwegian direct
27 May - 15 Jun Norwegian direct
06 May - 13 May Vueling Airlines
11 May - 18 May Norwegian direct
01 May - 06 May Norwegian direct
01 May - 08 May Norwegian direct
27 May - 01 Jun Norwegian
11 May - 01 Jun Norwegian
25 May - 15 Jun Norwegian Air Sweden AOC
27 May - 08 Jun Vueling Airlines
27 May - 04 Jun Vueling Airlines

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

Powered by

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.

Book a cheap hotel in Porto

Cheap car rent in Porto

Feel free to contact us with any feedback or request another flight research.