Cheapest return flights from Frankfurt to Keflavik in December from $231

Best time to book flights for Frankfurt (FRA) to Keflavik (KEF) flights at AirHint

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

Return flights

13 Dec - 08 Jan Ryanair
13 Dec - 17 Dec easyJet
17 Dec - 20 Jan Ryanair
08 Dec - 14 Dec Ryanair
11 Dec - 15 Dec LOT
01 Dec - 14 Dec easyJet
20 Dec - 26 Dec Ryanair
20 Dec - 06 Jan Ryanair
13 Dec - 17 Dec Icelandair direct
22 Dec - 27 Dec Ryanair
31 Dec - 07 Jan Icelandair direct
29 Dec - 05 Jan Ryanair
19 Dec - 29 Dec easyJet
17 Dec - 20 Jan Icelandair direct
13 Dec - 08 Jan Icelandair direct
27 Dec - 03 Jan Ryanair
27 Dec - 02 Jan Ryanair
11 Dec - 15 Dec Icelandair direct
20 Dec - 04 Jan Ryanair
27 Dec - 31 Dec Ryanair

Also check the deals for one-way flights from Frankfurt 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik