Cheapest return flights from Chicago to Keflavik in October from $334

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

Return flights

30 Oct - 06 Nov Icelandair direct
20 Oct - 07 Nov Icelandair direct
19 Oct - 23 Oct Icelandair direct
29 Oct - 05 Nov Icelandair direct
17 Oct - 23 Oct Icelandair direct
12 Oct - 21 Oct Icelandair direct
06 Oct - 15 Oct Sun Country Airlines
17 Oct - 24 Oct Spirit Airlines
31 Oct - 09 Nov Icelandair direct
26 Oct - 02 Nov Icelandair direct
14 Oct - 21 Oct Spirit Airlines
20 Oct - 27 Oct Spirit Airlines
08 Oct - 15 Oct Icelandair direct
06 Oct - 15 Oct Icelandair direct
21 Oct - 01 Nov Icelandair direct
20 Oct - 27 Oct Icelandair direct
25 Oct - 01 Nov Spirit Airlines
25 Oct - 01 Nov Icelandair direct
29 Oct - 01 Nov Icelandair direct

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

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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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