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

Return flights

14 Dec - 16 Dec	Ryanair
14 Dec - 17 Dec	Ryanair
18 Dec - 24 Dec	Ryanair
13 Dec - 20 Dec	Ryanair
11 Dec - 19 Dec	Ryanair
13 Dec - 21 Dec	Ryanair
14 Dec - 21 Dec	Ryanair
12 Dec - 14 Dec	Ryanair
19 Dec - 26 Dec	Ryanair
23 Dec - 06 Jan	Ryanair
21 Dec - 28 Dec	Ryanair
29 Dec - 11 Jan	Ryanair
21 Dec - 04 Jan	Ryanair
26 Dec - 08 Jan	Ryanair
27 Dec - 02 Jan	Ryanair
30 Dec - 04 Jan	Ryanair
28 Dec - 05 Jan	Ryanair
28 Dec - 02 Jan	Ryanair
29 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from Charleroi 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 Charleroi to Keflavik in December from $264

Return flights