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

Return flights

04 Oct - 05 Oct	Fly Play	direct
02 Oct - 09 Oct	Lufthansa
07 Oct - 16 Oct	Fly Play
13 Oct - 16 Oct	easyJet
18 Oct - 21 Oct	Fly Play
04 Oct - 11 Oct	Fly Play
09 Oct - 16 Oct	Fly Play
25 Oct - 03 Nov	Wizz Air
07 Oct - 12 Oct	Wizz Air
25 Oct - 30 Oct	Wizz Air
31 Oct - 07 Nov	Wizz Air Malta
09 Oct - 09 Oct	Fly Play
25 Oct - 03 Nov	Icelandair	direct
31 Oct - 07 Nov	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Dublin 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 Keflavik to Dublin in October from $208

Return flights