Cheapest return flights from Chicago to Keflavik in August from 487€

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 August 2025 (see full year).

Return flights

20 Aug - 27 Aug Air Canada
17 Aug - 24 Aug Air Canada
22 Aug - 29 Aug Lufthansa
24 Aug - 31 Aug SWISS
15 Aug - 22 Aug Lufthansa
08 Aug - 15 Aug Lufthansa
12 Aug - 19 Aug SWISS
05 Aug - 12 Aug Air Canada
21 Aug - 28 Aug United direct
16 Aug - 27 Aug United
23 Aug - 03 Sep United
25 Aug - 08 Sep United
23 Aug - 02 Sep United
26 Aug - 02 Sep Air Canada
27 Aug - 03 Sep Icelandair direct
25 Aug - 01 Sep Scandinavian Airlines
26 Aug - 02 Sep Icelandair direct
25 Aug - 01 Sep Icelandair direct
25 Aug - 02 Sep jetBlue
21 Aug - 01 Sep United

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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