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

Return flights

10 Oct - 19 Oct	Wizz Air
06 Oct - 12 Oct	Wizz Air
04 Oct - 12 Oct	Wizz Air UK
06 Oct - 13 Oct	Wizz Air
07 Oct - 16 Oct	Wizz Air UK
07 Oct - 13 Oct	Wizz Air UK
02 Oct - 12 Oct	Wizz Air UK
04 Oct - 11 Oct	Wizz Air UK
01 Oct - 08 Oct	Wizz Air UK
03 Oct - 11 Oct	Wizz Air

Also check the deals for one-way flights from Split 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 Split to Keflavik in October from $216

Return flights