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

Return flights

13 Apr - 18 Apr	Norwegian
15 Apr - 18 Apr	Norwegian
15 Apr - 22 Apr	Norwegian
16 Apr - 19 Apr	Ryanair
17 Apr - 22 Apr	Vueling Airlines
17 Apr - 18 Apr	Norwegian
13 Apr - 15 Apr	Norwegian	direct
15 Apr - 28 Apr	Norwegian
17 Apr - 20 Apr	Ryanair
03 Apr - 06 Apr	Ryanair
30 Apr - 03 May	Ryanair
13 Apr - 01 May	Norwegian	direct
13 Apr - 04 May	Norwegian	direct
17 Apr - 06 May	Norwegian
15 Apr - 04 May	Norwegian
15 Apr - 01 May	Norwegian	direct
15 Apr - 04 May	Norwegian	direct
30 Apr - 05 May	TAP
15 Apr - 06 May	Norwegian	direct
29 Apr - 01 May	Ryanair

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

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 April from 100€

Return flights