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

Return flights

02 Dec - 05 Dec	easyJet
05 Dec - 10 Dec	Wizz Air
01 Dec - 05 Dec	easyJet
03 Dec - 06 Dec	Wizz Air Malta
02 Dec - 06 Dec	easyJet
06 Dec - 10 Dec	easyJet
11 Dec - 15 Dec	Wizz Air Malta
02 Dec - 09 Dec	Vueling Airlines
13 Dec - 15 Dec	Wizz Air Malta
06 Dec - 09 Dec	easyJet
21 Dec - 07 Jan	Ryanair
22 Dec - 06 Jan	Wizz Air Malta
20 Dec - 06 Jan	Wizz Air Malta
25 Dec - 08 Jan	Wizz Air
29 Dec - 07 Jan	Wizz Air
23 Dec - 01 Jan	Wizz Air Malta
26 Dec - 08 Jan	Ryanair
25 Dec - 01 Jan	Wizz Air
31 Dec - 07 Jan	easyJet
25 Dec - 06 Jan	Wizz Air

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 $185

Return flights