Cheapest return flights from Dublin to Keflavik in December from 145€

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

01 Dec - 04 Dec Fly Play direct
14 Dec - 18 Dec Fly Play direct
04 Dec - 09 Dec Fly Play
05 Dec - 10 Dec Fly Play
09 Dec - 12 Dec Icelandair direct
02 Dec - 09 Dec Ryanair
29 Dec - 02 Jan Fly Play direct
05 Dec - 10 Dec Icelandair direct
02 Dec - 09 Dec Icelandair direct
29 Dec - 03 Jan Fly Play direct
04 Dec - 09 Dec Icelandair direct
27 Dec - 02 Jan Fly Play direct
27 Dec - 03 Jan Fly Play direct
17 Dec - 21 Dec Ryanair

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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