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
08 Dec - 11 Dec	easyJet
06 Dec - 10 Dec	Aegean Airlines
06 Dec - 11 Dec	Aegean Airlines
24 Dec - 12 Jan	Wizz Air
02 Dec - 07 Dec	Wizz Air
07 Dec - 10 Dec	Ryanair
02 Dec - 08 Dec	Wizz Air
09 Dec - 11 Dec	Ryanair
08 Dec - 10 Dec	easyJet
09 Dec - 14 Dec	easyJet
31 Dec - 11 Jan	LOT
25 Dec - 11 Jan	Wizz Air
27 Dec - 01 Jan	Air Serbia
27 Dec - 04 Jan	Air Serbia
25 Dec - 04 Jan	SKY express
29 Dec - 02 Jan	Ryanair
30 Dec - 03 Jan	Wizz Air
28 Dec - 04 Jan	Aegean Airlines
28 Dec - 02 Jan	Ryanair

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Thessaloniki to Keflavik in December from 164€

Return flights