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

Return flights

31 Dec - 06 Jan	Ryanair
31 Dec - 04 Jan	Ryanair
22 Dec - 31 Dec	Wizz Air
26 Dec - 30 Dec	Ryanair
29 Dec - 06 Jan	Ryanair
25 Dec - 31 Dec	Wizz Air Malta
22 Dec - 01 Jan	Ryanair
29 Dec - 01 Jan	Ryanair
28 Dec - 01 Jan	Ryanair
25 Dec - 01 Jan	Wizz Air
28 Dec - 02 Jan	Ryanair
23 Dec - 26 Dec	Ryanair
28 Dec - 05 Jan	Ryanair
26 Dec - 01 Jan	Ryanair
23 Dec - 26 Dec	Icelandair	direct
23 Dec - 30 Dec	Icelandair	direct
26 Dec - 30 Dec	Icelandair	direct

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 $312

Return flights