AirHint found the following cheapest return flights from Rome (FCO) to Keflavik (KEF) in December 2025 (see full year).

Return flights

31 Dec - 06 Jan	Wizz Air
29 Dec - 07 Jan	Wizz Air
31 Dec - 07 Jan	Wizz Air
29 Dec - 09 Jan	Wizz Air
29 Dec - 06 Jan	Wizz Air
29 Dec - 04 Jan	Ryanair
29 Dec - 01 Jan	Ryanair
30 Dec - 06 Jan	Wizz Air
29 Dec - 05 Jan	Wizz Air
27 Dec - 29 Dec	Ryanair
29 Dec - 02 Jan	Ryanair
27 Dec - 31 Dec	Ryanair
28 Dec - 31 Dec	Wizz Air
28 Dec - 30 Dec	Wizz Air
27 Dec - 30 Dec	Aeroitalia
27 Dec - 28 Dec	Ryanair

Also check the deals for one-way flights from Rome to Keflavik 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Rome to Keflavik in December from 305€

Return flights