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

Return flights

10 Apr - 13 Apr	Norwegian
01 Apr - 06 Apr	Norwegian	direct
06 Apr - 13 Apr	Iberia
01 Apr - 17 Apr	Norwegian	direct
01 Apr - 03 Apr	Norwegian	direct
03 Apr - 06 Apr	KLM
24 Apr - 27 Apr	Norwegian	direct
03 Apr - 06 Apr	Norwegian	direct
14 Apr - 24 Apr	Norwegian Air Sweden AOC
03 Apr - 24 Apr	Norwegian	direct

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 200€

Return flights