AirHint found the following cheapest return flights from Dublin (DUB) to Keflavik (KEF) in January 2026 (see full year).

Return flights

16 Jan - 23 Jan	Icelandair	direct
22 Jan - 26 Jan	Icelandair	direct
14 Jan - 17 Jan	Icelandair	direct
28 Jan - 31 Jan	Icelandair	direct
21 Jan - 28 Jan	Icelandair	direct
20 Jan - 23 Jan	Icelandair	direct
26 Jan - 29 Jan	Icelandair	direct
07 Jan - 14 Jan	Ryanair
12 Jan - 25 Jan	Icelandair	direct
21 Jan - 25 Jan	Icelandair	direct
30 Jan - 04 Feb	Icelandair	direct
30 Jan - 03 Feb	Ryanair

Also check the deals for one-way flights from Dublin to Keflavik in January.

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 Dublin to Keflavik in January from $171

Return flights