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

Return flights

05 Dec - 12 Dec	Scandinavian Airlines
01 Dec - 05 Dec	Ryanair
02 Dec - 05 Dec	Ryanair
05 Dec - 08 Dec	Ryanair
03 Dec - 08 Dec	Ryanair
01 Dec - 07 Dec	Wizz Air
05 Dec - 09 Dec	Scandinavian Airlines
07 Dec - 09 Dec	easyJet
02 Dec - 09 Dec	Ryanair
03 Dec - 09 Dec	Vueling Airlines
26 Dec - 02 Jan	Air Serbia
26 Dec - 05 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
17 Dec - 01 Jan	Vueling Airlines
28 Dec - 02 Jan	Ryanair
27 Dec - 01 Jan	Vueling Airlines
30 Dec - 30 Jan	easyJet
20 Dec - 01 Jan	Vueling Airlines
24 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 148€

Return flights