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

Return flights

14 Oct - 27 Oct	easyJet
21 Oct - 25 Oct	easyJet
08 Oct - 11 Oct	Ryanair
21 Oct - 27 Oct	easyJet
02 Oct - 09 Oct	easyJet
25 Oct - 30 Oct	Ryanair
02 Oct - 05 Oct	easyJet
06 Oct - 09 Oct	Ryanair
21 Oct - 31 Oct	easyJet
13 Oct - 30 Oct	Ryanair
28 Oct - 01 Nov	easyJet
29 Oct - 01 Nov	Ryanair
27 Oct - 01 Nov	Jet2
28 Oct - 02 Nov	easyJet
27 Oct - 02 Nov	Jet2
30 Oct - 02 Nov	Ryanair
26 Oct - 02 Nov	Ryanair
22 Oct - 01 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 $217

Return flights