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 - 03 Feb	Ryanair
20 Jan - 24 Jan	Ryanair
05 Jan - 10 Jan	Icelandair	direct
12 Jan - 19 Jan	Ryanair
20 Jan - 24 Jan	Icelandair	direct
08 Jan - 15 Jan	Ryanair
08 Jan - 13 Jan	Ryanair
29 Jan - 01 Feb	Ryanair
07 Jan - 10 Jan	Ryanair
08 Jan - 13 Jan	Icelandair	direct
07 Jan - 10 Jan	Icelandair	direct
29 Jan - 03 Feb	Icelandair	direct
29 Jan - 01 Feb	Icelandair	direct
30 Jan - 03 Feb	Aer Lingus
30 Jan - 03 Feb	Icelandair	direct

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 169€

Return flights