Cheapest return flights from Brussels to Keflavik in December from $314

Best time to book flights for Brussels (BRU) to Keflavik (KEF) flights at AirHint

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

Return flights

19 Dec - 24 Dec Icelandair direct
25 Dec - 01 Jan British Airways
21 Dec - 28 Dec Brussels Airlines
28 Dec - 02 Jan Brussels Airlines
26 Dec - 30 Dec Icelandair direct
27 Dec - 03 Jan Brussels Airlines
21 Dec - 28 Dec Icelandair direct
20 Dec - 27 Dec Brussels Airlines
28 Dec - 04 Jan Brussels Airlines
26 Dec - 02 Jan Ryanair
26 Dec - 02 Jan Icelandair direct

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

Skyscanner

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