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

Return flights

05 Dec - 10 Dec	Wizz Air Malta
01 Dec - 06 Dec	easyJet
06 Dec - 11 Dec	Wizz Air Malta
01 Dec - 04 Dec	Aeroitalia
01 Dec - 02 Dec	easyJet
03 Dec - 10 Dec	Wizz Air
02 Dec - 09 Dec	easyJet
08 Dec - 13 Dec	Wizz Air
01 Dec - 08 Dec	Wizz Air
08 Dec - 12 Dec	easyJet
17 Dec - 10 Jan	Vueling Airlines
24 Dec - 01 Jan	easyJet
31 Dec - 07 Jan	easyJet
31 Dec - 04 Jan	LOT
31 Dec - 06 Jan	LOT
24 Dec - 04 Jan	LOT
29 Dec - 06 Jan	LOT
23 Dec - 01 Jan	easyJet
29 Dec - 04 Jan	LOT
27 Dec - 04 Jan	LOT

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.

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Cheapest return flights from Rome to Keflavik in December from 174€

Return flights