Cheapest return flights from Chicago to Keflavik in October from $371

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 October 2025 (see full year).

Return flights

01 Oct - 06 Oct Icelandair direct
10 Oct - 15 Oct Icelandair direct
26 Oct - 01 Nov Icelandair direct
15 Oct - 25 Oct Icelandair direct
17 Oct - 24 Oct Icelandair direct
16 Oct - 21 Oct Icelandair direct
15 Oct - 20 Oct Icelandair direct
09 Oct - 14 Oct Icelandair direct
12 Oct - 17 Oct Icelandair direct
18 Oct - 26 Oct Icelandair direct
27 Oct - 01 Nov Icelandair direct
18 Oct - 24 Oct Icelandair direct
29 Oct - 04 Nov Icelandair direct
28 Oct - 03 Nov Icelandair direct
24 Oct - 04 Nov Icelandair direct
26 Oct - 03 Nov Icelandair direct
26 Oct - 06 Nov Icelandair direct
29 Oct - 08 Nov Icelandair direct
24 Oct - 01 Nov Icelandair direct
23 Oct - 03 Nov Icelandair direct

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

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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