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

Return flights

18 Sep - 23 Sep	Wizz Air Malta
27 Sep - 11 Oct	Wizz Air Malta
23 Sep - 27 Sep	Wizz Air Malta
17 Sep - 25 Sep	Wizz Air Malta
20 Sep - 29 Sep	Ryanair
01 Sep - 01 Oct	Wizz Air
11 Sep - 20 Sep	Jet2
15 Sep - 23 Sep	Wizz Air Malta
17 Sep - 20 Sep	Wizz Air Malta
23 Sep - 30 Sep	Wizz Air Malta
24 Sep - 05 Oct	Wizz Air Malta
13 Sep - 23 Sep	Wizz Air Malta
01 Sep - 07 Sep	Wizz Air
23 Sep - 02 Oct	Wizz Air Malta
29 Sep - 05 Oct	Wizz Air Malta
26 Sep - 01 Oct	Wizz Air
11 Sep - 15 Oct	Wizz Air
30 Sep - 05 Oct	Wizz Air Malta
27 Sep - 10 Oct	Wizz Air Malta
28 Sep - 01 Oct	Wizz Air Malta

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

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 September from 185€

Return flights