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

Return flights

06 Oct - 16 Oct	transavia
17 Oct - 25 Oct	transavia
07 Oct - 16 Oct	transavia
18 Oct - 22 Oct	transavia
02 Oct - 05 Oct	transavia
15 Oct - 22 Oct	transavia
22 Oct - 31 Oct	transavia
22 Oct - 27 Oct	transavia
19 Oct - 26 Oct	transavia
20 Oct - 27 Oct	transavia

Also check the deals for one-way flights from Rotterdam 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 Rotterdam to Keflavik in October from $325

Return flights