Cheapest return flights from Chicago to Keflavik in August from 306€

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

Return flights

19 Aug - 26 Aug Icelandair direct
18 Aug - 29 Aug Icelandair direct
19 Aug - 29 Aug Icelandair direct
20 Aug - 29 Aug Icelandair direct
17 Aug - 22 Aug Icelandair direct
23 Aug - 27 Aug Icelandair direct
19 Aug - 25 Aug Icelandair direct
17 Aug - 21 Aug Icelandair direct
20 Aug - 25 Aug Icelandair direct
20 Aug - 27 Aug Icelandair direct
26 Aug - 02 Sep Icelandair direct
19 Aug - 02 Sep Icelandair direct
22 Aug - 13 Sep Frontier Airlines
29 Aug - 06 Sep Spirit Airlines
28 Aug - 06 Sep Frontier Airlines
28 Aug - 03 Sep Air Canada
30 Aug - 05 Sep Spirit Airlines
30 Aug - 07 Sep Air Canada
30 Aug - 01 Sep Spirit Airlines
28 Aug - 03 Sep Icelandair direct

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

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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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