Cheapest return flights from Chicago to Keflavik in December from $369

Best time to book flights for Chicago (ORD) to Keflavik (KEF) flights at AirHint

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

Return flights

02 Dec - 09 Dec Icelandair direct
03 Dec - 11 Dec Icelandair direct
01 Dec - 07 Dec Icelandair direct
07 Dec - 13 Dec Icelandair direct
08 Dec - 13 Dec Icelandair direct
10 Dec - 15 Dec Icelandair direct
05 Dec - 10 Dec Icelandair direct
01 Dec - 06 Dec Icelandair direct
07 Dec - 12 Dec Icelandair direct
03 Dec - 08 Dec Icelandair direct
29 Dec - 03 Jan Icelandair direct
31 Dec - 05 Jan Icelandair direct
28 Dec - 02 Jan Icelandair direct
27 Dec - 01 Jan Icelandair direct
27 Dec - 04 Jan Icelandair direct
23 Dec - 01 Jan Icelandair direct
28 Dec - 05 Jan Icelandair direct

Also check the deals for one-way flights from Chicago 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