Cheapest return flights from Chicago to Keflavik in December from 426€

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

Return flights

01 Dec - 08 Dec Icelandair direct
01 Dec - 09 Dec Icelandair direct
03 Dec - 11 Dec Icelandair direct
14 Dec - 09 Jan Icelandair direct
03 Dec - 10 Dec Spirit Airlines
02 Dec - 09 Dec Icelandair direct
02 Dec - 10 Dec Air Canada
02 Dec - 10 Dec Icelandair direct
05 Dec - 07 Dec Scandinavian Airlines
17 Dec - 24 Dec Icelandair direct
03 Dec - 10 Dec Icelandair direct
17 Dec - 10 Jan Icelandair direct
18 Dec - 10 Jan Icelandair direct
22 Dec - 07 Jan Icelandair direct
20 Dec - 11 Jan Sun Country Airlines
15 Dec - 01 Jan Icelandair direct
20 Dec - 11 Jan Icelandair direct
19 Dec - 10 Jan Spirit Airlines
19 Dec - 10 Jan Icelandair direct
26 Dec - 01 Jan WestJet

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

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