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

Return flights

19 Jan - 24 Jan	Ryanair
29 Jan - 05 Feb	Ryanair
15 Jan - 22 Jan	Ryanair
05 Jan - 10 Jan	Ryanair
19 Jan - 24 Jan	Icelandair	direct
05 Jan - 10 Jan	Icelandair	direct
05 Jan - 11 Jan	Icelandair	direct
10 Jan - 15 Jan	Icelandair	direct
05 Jan - 09 Jan	Icelandair	direct
16 Jan - 23 Jan	Icelandair	direct
11 Jan - 22 Jan	Icelandair	direct
30 Jan - 02 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 $195

Return flights