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

Return flights

17 Dec - 05 Jan	Wizz Air Malta
17 Dec - 28 Jan	Wizz Air Malta
03 Dec - 06 Dec	Ryanair
06 Dec - 08 Dec	Ryanair
16 Dec - 03 Jan	Ryanair
26 Dec - 31 Dec	Ryanair
26 Dec - 05 Jan	Ryanair
22 Dec - 31 Dec	Ryanair
09 Dec - 13 Dec	Ryanair
26 Dec - 01 Jan	Ryanair
01 Dec - 06 Dec	Scandinavian Airlines
23 Dec - 28 Dec	Ryanair
22 Dec - 01 Jan	Ryanair
05 Dec - 09 Dec	Scandinavian Airlines
21 Dec - 28 Dec	Ryanair
24 Dec - 31 Dec	KLM
26 Dec - 02 Jan	Ryanair
28 Dec - 04 Jan	Vueling Airlines
13 Dec - 01 Jan	Vueling Airlines
17 Dec - 01 Jan	Vueling 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 119€

Return flights