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

Return flights

23 Jan - 26 Jan	Ryanair
23 Jan - 31 Jan	Ryanair
09 Jan - 12 Jan	Ryanair
21 Jan - 28 Jan	Ryanair
23 Jan - 25 Jan	Ryanair
09 Jan - 11 Jan	Ryanair
27 Jan - 31 Jan	Ryanair
30 Jan - 01 Feb	Ryanair
23 Jan - 28 Jan	Ryanair
15 Jan - 21 Jan	Ryanair
26 Jan - 01 Feb	Ryanair
15 Jan - 18 Jan	Ryanair
29 Jan - 02 Feb	Ryanair
28 Jan - 01 Feb	Ryanair
29 Jan - 01 Feb	Ryanair
31 Jan - 07 Feb	KLM
31 Jan - 08 Feb	KLM
28 Jan - 05 Feb	Vueling Airlines
26 Jan - 14 Feb	Ryanair
21 Jan - 05 Feb	Vueling Airlines

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

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 January from $140

Return flights