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

Return flights

01 Dec - 04 Dec	easyJet
01 Dec - 10 Dec	Wizz Air
05 Dec - 11 Dec	Ryanair
30 Dec - 12 Jan	Wizz Air
20 Dec - 31 Dec	Ryanair
19 Dec - 31 Dec	Wizz Air
31 Dec - 18 Jan	Ryanair
04 Dec - 07 Dec	Ryanair
19 Dec - 30 Dec	Ryanair
23 Dec - 30 Dec	Ryanair
24 Dec - 30 Dec	LOT
24 Dec - 12 Jan	Wizz Air
26 Dec - 31 Dec	Ryanair
30 Dec - 05 Jan	Wizz Air
31 Dec - 05 Jan	Ryanair
25 Dec - 11 Jan	transavia
23 Dec - 03 Jan	Ryanair
25 Dec - 04 Jan	Aegean Airlines
30 Dec - 04 Jan	Ryanair
28 Dec - 02 Jan	Wizz Air

Also check the deals for one-way flights from Thessaloniki 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 Thessaloniki to Keflavik in December from 223€

Return flights