Cheapest return flights from Dublin to Keflavik in December from $161

Best time to book flights for Dublin (DUB) to Keflavik (KEF) flights at AirHint

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

Return flights

12 Dec - 15 Dec Fly Play direct
11 Dec - 14 Dec Fly Play direct
01 Dec - 04 Dec Fly Play direct
13 Dec - 19 Dec Icelandair direct
13 Dec - 18 Dec Icelandair direct
19 Dec - 26 Dec Fly Play direct
31 Dec - 06 Jan Icelandair direct
11 Dec - 17 Dec Ryanair
05 Dec - 09 Dec Ryanair
17 Dec - 21 Dec Icelandair direct
20 Dec - 27 Dec Fly Play direct
24 Dec - 02 Jan Icelandair direct
26 Dec - 02 Jan Fly Play direct
30 Dec - 02 Jan Icelandair direct
30 Dec - 04 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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