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

Return flights

30 Mar - 15 Apr	Norwegian	direct
30 Mar - 06 Apr	Norwegian	direct
30 Mar - 17 Apr	Norwegian	direct
30 Mar - 03 Apr	Norwegian	direct
30 Mar - 10 Apr	Norwegian	direct
25 Mar - 15 Apr	Vueling Airlines
25 Mar - 06 Apr	Vueling Airlines
28 Mar - 03 Apr	Ryanair
25 Mar - 03 Apr	Vueling Airlines
27 Mar - 03 Apr	Vueling Airlines
25 Mar - 30 Mar	Vueling Airlines
24 Mar - 27 Mar	Ryanair
29 Mar - 30 Mar	Norwegian Air Sweden AOC

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

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 March from 178€

Return flights