Cheapest return flights from Chicago to Keflavik in December from 537€

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

14 Dec - 21 Dec British Airways
01 Dec - 11 Dec Icelandair direct
22 Dec - 29 Dec British Airways
14 Dec - 21 Dec Icelandair direct
01 Dec - 31 Dec Icelandair direct
25 Dec - 01 Jan British Airways
21 Dec - 28 Dec British Airways
22 Dec - 29 Dec Icelandair direct
23 Dec - 30 Dec Icelandair direct
24 Dec - 31 Dec Icelandair direct
20 Dec - 27 Dec Icelandair direct
25 Dec - 01 Jan Icelandair direct
20 Dec - 03 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.

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