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

Return flights

13 Apr - 15 Apr	Norwegian	direct
13 Apr - 17 Apr	Norwegian	direct
10 Apr - 15 Apr	Norwegian	direct
10 Apr - 17 Apr	Norwegian	direct
03 Apr - 10 Apr	SWISS
03 Apr - 15 Apr	Norwegian	direct
03 Apr - 06 Apr	Norwegian	direct
03 Apr - 17 Apr	Norwegian	direct
17 Apr - 08 May	Norwegian	direct
03 Apr - 10 Apr	Norwegian	direct
12 Apr - 17 Apr	easyJet

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 144€

Return flights