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

Return flights

01 May - 11 May	Norwegian	direct
05 May - 09 May	Vueling Airlines
04 May - 11 May	Vueling Airlines
22 May - 24 May	TAP
13 May - 25 May	Ryanair
13 May - 17 May	Ryanair
01 May - 04 May	Norwegian
01 May - 04 May	Norwegian	direct
17 May - 21 May	Ryanair
04 May - 08 May	TAP

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

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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Cheapest return flights from Porto to Oslo in May from 131€

Return flights