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

Return flights

07 Dec - 11 Dec	Ryanair
18 Dec - 21 Dec	Ryanair
10 Dec - 14 Dec	Ryanair
04 Dec - 12 Dec	Ryanair
19 Dec - 26 Dec	Icelandair	direct
04 Dec - 12 Dec	Icelandair	direct
21 Dec - 26 Dec	Ryanair
05 Dec - 07 Dec	Icelandair	direct
18 Dec - 18 Dec	Ryanair
18 Dec - 04 Jan	Ryanair
07 Dec - 11 Dec	Icelandair	direct
30 Dec - 04 Jan	Scandinavian Airlines
18 Dec - 04 Jan	Icelandair	direct
28 Dec - 02 Jan	Scandinavian Airlines
22 Dec - 08 Jan	Brussels Airlines
28 Dec - 01 Jan	Scandinavian Airlines
30 Dec - 04 Jan	Icelandair	direct
29 Dec - 04 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Brussels 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 Brussels to Keflavik in December from 238€

Return flights