Cheapest return flights from Oslo to Keflavik in December from $149

Best time to book flights for Oslo (OSL) to Keflavik (KEF) flights at AirHint

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

Return flights

08 Dec - 11 Dec Scandinavian Airlines direct
01 Dec - 04 Dec Scandinavian Airlines direct
04 Dec - 07 Dec Scandinavian Airlines
16 Dec - 19 Dec Scandinavian Airlines direct
02 Dec - 05 Dec Icelandair direct
04 Dec - 07 Dec Icelandair direct
09 Dec - 12 Dec Icelandair direct
11 Dec - 14 Dec Icelandair direct
07 Dec - 10 Dec Icelandair direct
06 Dec - 09 Dec Scandinavian Airlines
26 Dec - 08 Jan Icelandair direct

Also check the deals for one-way flights from Oslo 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