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

Return flights

10 Dec - 13 Dec	easyJet
02 Dec - 09 Dec	easyJet
08 Dec - 12 Dec	easyJet
01 Dec - 13 Dec	easyJet
31 Dec - 06 Jan	easyJet
04 Dec - 09 Dec	Ryanair
02 Dec - 06 Dec	easyJet
02 Dec - 05 Dec	easyJet
05 Dec - 09 Dec	Ryanair
11 Dec - 14 Dec	KLM
10 Dec - 15 Dec	easyJet
22 Dec - 06 Jan	easyJet
19 Dec - 06 Jan	Ryanair
30 Dec - 01 Jan	easyJet
24 Dec - 01 Jan	Wizz Air
23 Dec - 01 Jan	Wizz Air Malta
25 Dec - 04 Jan	Wizz Air
25 Dec - 01 Jan	Wizz Air
31 Dec - 03 Jan	easyJet
26 Dec - 06 Jan	Wizz Air

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 $175

Return flights