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

Return flights

30 Dec - 06 Jan	easyJet
30 Dec - 05 Jan	Wizz Air
15 Dec - 22 Dec	Wizz Air Malta
24 Dec - 01 Jan	Scandinavian Airlines
23 Dec - 30 Dec	Scandinavian Airlines
28 Dec - 02 Jan	Wizz Air
17 Dec - 05 Jan	Scandinavian Airlines
24 Dec - 31 Dec	Scandinavian Airlines
21 Dec - 30 Dec	Scandinavian Airlines
17 Dec - 04 Jan	Scandinavian Airlines
29 Dec - 04 Jan	easyJet
30 Dec - 04 Jan	Wizz Air
20 Dec - 05 Jan	Wizz Air
20 Dec - 03 Jan	Wizz Air
21 Dec - 21 Dec	Icelandair
20 Dec - 29 Dec	Wizz Air

Also check the deals for one-way flights from Keflavik to Vilnius 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 Keflavik to Vilnius in December from 306€

Return flights