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

Return flights

09 Dec - 13 Dec	easyJet
08 Dec - 11 Dec	Vueling Airlines
08 Dec - 12 Dec	Vueling Airlines
06 Dec - 11 Dec	easyJet
04 Dec - 09 Dec	Vueling Airlines
11 Dec - 16 Dec	Iberia
05 Dec - 10 Dec	Ryanair
23 Dec - 01 Jan	easyJet
05 Dec - 08 Dec	Ryanair
30 Dec - 04 Jan	Scandinavian Airlines
12 Dec - 20 Dec	Vueling Airlines
06 Dec - 11 Dec	Fly Play	direct
28 Dec - 04 Jan	Vueling Airlines
29 Dec - 01 Jan	Vueling Airlines
27 Dec - 01 Jan	Ryanair
27 Dec - 06 Jan	Fly Play	direct
27 Dec - 02 Jan	Scandinavian Airlines
26 Dec - 06 Jan	Ryanair
26 Dec - 06 Jan	Icelandair	direct
26 Dec - 05 Jan	Ryanair

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

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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Cheapest return flights from Alicante to Keflavik in December from 198€

Return flights