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

Return flights

17 Dec - 07 Jan	Wizz Air
02 Dec - 09 Dec	easyJet
09 Dec - 11 Dec	Wizz Air Malta
02 Dec - 06 Dec	easyJet
01 Dec - 09 Dec	easyJet
22 Dec - 07 Jan	Wizz Air
09 Dec - 15 Dec	Wizz Air Malta
11 Dec - 14 Dec	Wizz Air Malta
11 Dec - 15 Dec	KLM
03 Dec - 07 Dec	Wizz Air
22 Dec - 04 Jan	Wizz Air
01 Dec - 04 Dec	Wizz Air
01 Dec - 06 Dec	Wizz Air
24 Dec - 06 Jan	Wizz Air
24 Dec - 01 Jan	Wizz Air
31 Dec - 08 Jan	Wizz Air Malta
23 Dec - 09 Jan	Wizz Air Malta
31 Dec - 07 Jan	Wizz Air Malta
29 Dec - 13 Jan	Wizz Air
31 Dec - 11 Jan	Aeroitalia

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 167€

Return flights