AirHint found the following cheapest return flights from Porto (OPO) to Oslo (OSL) in December 2025 (see full year).

Return flights

09 Dec - 11 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
31 Dec - 07 Jan	Ryanair
03 Dec - 10 Dec	Wizz Air
26 Dec - 31 Dec	Ryanair
17 Dec - 28 Jan	Ryanair
22 Dec - 31 Dec	Ryanair
01 Dec - 08 Dec	Scandinavian Airlines
26 Dec - 06 Jan	Ryanair
09 Dec - 13 Dec	Ryanair
08 Dec - 14 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
26 Dec - 01 Jan	Ryanair
01 Dec - 31 Dec	Scandinavian Airlines
22 Dec - 01 Jan	Ryanair
22 Dec - 02 Jan	Scandinavian Airlines
26 Dec - 03 Jan	Ryanair
26 Dec - 02 Jan	Ryanair
31 Dec - 03 Jan	Ryanair
29 Dec - 02 Jan	Scandinavian Airlines

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

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 December from $157

Return flights