Cheapest return flights from Dublin to Keflavik in December from $168

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

Return flights

06 Dec - 07 Dec Icelandair direct
13 Dec - 15 Dec Icelandair direct
11 Dec - 13 Dec Aer Lingus
10 Dec - 14 Dec Icelandair direct
05 Dec - 07 Dec Icelandair direct
04 Dec - 09 Dec Icelandair direct
05 Dec - 08 Dec Icelandair direct
03 Dec - 07 Dec Icelandair direct
04 Dec - 07 Dec Icelandair direct
04 Dec - 08 Dec Icelandair direct
31 Dec - 06 Jan Icelandair direct
24 Dec - 01 Jan Ryanair
24 Dec - 01 Jan Icelandair direct
31 Dec - 05 Jan Icelandair direct
18 Dec - 04 Jan Ryanair
24 Dec - 04 Jan Ryanair
18 Dec - 04 Jan Icelandair direct
24 Dec - 04 Jan Icelandair direct
29 Dec - 01 Jan Aer Lingus
26 Dec - 01 Jan Icelandair direct

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

Skyscanner

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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