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

Return flights

12 Dec - 17 Dec	Ryanair
10 Dec - 17 Dec	Ryanair
11 Dec - 17 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
09 Dec - 13 Dec	Ryanair
08 Dec - 11 Dec	Ryanair
03 Dec - 06 Dec	Ryanair
05 Dec - 09 Dec	Ryanair
04 Dec - 06 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
31 Dec - 05 Jan	Ryanair
31 Dec - 06 Jan	Ryanair
24 Dec - 01 Jan	Ryanair
27 Dec - 06 Jan	Ryanair
27 Dec - 08 Jan	Ryanair
22 Dec - 05 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
29 Dec - 05 Jan	Ryanair
29 Dec - 08 Jan	Ryanair
27 Dec - 01 Jan	Ryanair

Also check the deals for one-way flights from Rome 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 Rome to Oslo in December from $157

Return flights