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

Return flights

09 Oct - 16 Oct	easyJet
31 Oct - 09 Nov	easyJet
23 Oct - 26 Oct	Scandinavian Airlines
31 Oct - 20 Nov	easyJet
07 Oct - 26 Oct	British Airways
16 Oct - 20 Oct	Scandinavian Airlines
25 Oct - 28 Oct	LOT
16 Oct - 23 Oct	Scandinavian Airlines
07 Oct - 27 Oct	easyJet
25 Oct - 07 Nov	LOT
25 Oct - 27 Oct	LOT
02 Oct - 12 Oct	easyJet
11 Oct - 25 Oct	easyJet
25 Oct - 01 Nov	LOT
27 Oct - 01 Nov	easyJet
17 Oct - 02 Nov	easyJet
30 Oct - 08 Nov	Scandinavian Airlines
17 Oct - 02 Nov	Icelandair	direct
30 Oct - 08 Nov	Icelandair	direct
27 Oct - 01 Nov	SWISS	direct

Also check the deals for one-way flights from Zurich 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 Zurich to Keflavik in October from $254

Return flights