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

Return flights

02 Oct - 09 Oct	Ryanair
23 Oct - 27 Oct	Ryanair
21 Oct - 27 Oct	Ryanair
14 Oct - 20 Oct	Ryanair
16 Oct - 19 Oct	Ryanair
23 Oct - 28 Oct	Ryanair
01 Oct - 09 Oct	Ryanair
16 Oct - 22 Oct	Ryanair
08 Oct - 16 Oct	Ryanair
11 Oct - 14 Oct	Ryanair
31 Oct - 09 Nov	Ryanair
31 Oct - 03 Nov	Ryanair
30 Oct - 04 Nov	Ryanair
29 Oct - 02 Nov	Ryanair
26 Oct - 02 Nov	Ryanair

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

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 October from 209€

Return flights