AirHint found the following cheapest return flights from Rome (ROM) to Keflavik (KEF) in September 2026 (see full year).

Return flights

23 Sep - 27 Sep	Wizz Air
16 Sep - 27 Sep	Wizz Air
12 Sep - 22 Sep	Wizz Air
16 Sep - 23 Sep	Wizz Air
23 Sep - 01 Oct	Wizz Air
03 Sep - 16 Sep	Scandinavian Airlines
25 Sep - 04 Oct	Wizz Air
16 Sep - 24 Sep	Wizz Air
13 Sep - 23 Sep	Wizz Air
28 Sep - 07 Oct	Wizz Air
09 Sep - 13 Sep	Wizz Air
20 Sep - 27 Sep	Wizz Air
20 Sep - 24 Sep	Wizz Air Malta
20 Sep - 01 Oct	Wizz Air
27 Sep - 07 Oct	Wizz Air
28 Sep - 05 Oct	ITA Airways
25 Sep - 02 Oct	Wizz Air
23 Sep - 01 Oct	Icelandair	direct
25 Sep - 04 Oct	Icelandair	direct
28 Sep - 07 Oct	Icelandair	direct

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 $215

Return flights