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

Return flights

21 Oct - 27 Oct	easyJet
20 Oct - 26 Oct	Ryanair
08 Oct - 13 Oct	Ryanair
02 Oct - 06 Oct	easyJet
24 Oct - 30 Oct	Ryanair
05 Oct - 11 Oct	Vueling Airlines
17 Oct - 24 Oct	Ryanair
02 Oct - 12 Oct	easyJet
21 Oct - 31 Oct	easyJet
07 Oct - 28 Oct	easyJet
28 Oct - 02 Nov	easyJet
30 Oct - 02 Nov	Jet2
26 Oct - 01 Nov	Ryanair
22 Oct - 01 Nov	Ryanair
26 Oct - 02 Nov	Ryanair
22 Oct - 02 Nov	Ryanair

Also check the deals for one-way flights from Reus 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 Reus to Keflavik in October from 196€

Return flights