Cheapest return flights from Dublin to Keflavik in December from 134€

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

05 Dec - 08 Dec Fly Play direct
01 Dec - 04 Dec Fly Play direct
15 Dec - 12 Jan Fly Play direct
14 Dec - 18 Dec Fly Play direct
15 Dec - 18 Dec Fly Play direct
13 Dec - 01 Jan Fly Play direct
03 Dec - 05 Dec Ryanair
22 Dec - 29 Dec Fly Play direct
05 Dec - 10 Dec Fly Play
09 Dec - 12 Dec Ryanair
09 Dec - 12 Dec Icelandair direct
29 Dec - 01 Jan Fly Play direct
29 Dec - 03 Jan Fly Play direct
29 Dec - 05 Jan Fly Play direct
05 Dec - 10 Dec Icelandair direct
26 Dec - 02 Jan Fly Play direct
27 Dec - 02 Jan Fly Play direct
28 Dec - 02 Jan Fly Play direct
15 Dec - 06 Jan Ryanair
26 Dec - 01 Jan Fly Play 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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