Cheapest return flights from Chicago to Keflavik in August from 621€

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

26 Aug - 01 Sep United
28 Aug - 07 Sep jetBlue
21 Aug - 27 Aug Icelandair direct
22 Aug - 01 Sep Icelandair direct
23 Aug - 02 Sep Icelandair direct
27 Aug - 06 Sep Icelandair direct
23 Aug - 01 Sep Icelandair direct
26 Aug - 01 Sep Icelandair direct
27 Aug - 02 Sep Icelandair direct
28 Aug - 06 Sep Icelandair direct
28 Aug - 07 Sep Icelandair direct
04 Aug - 08 Aug Icelandair direct
01 Aug - 16 Aug Icelandair direct
11 Aug - 21 Aug Icelandair direct
13 Aug - 28 Aug Icelandair direct
01 Aug - 10 Aug Icelandair direct
13 Aug - 22 Aug jetBlue
10 Aug - 20 Aug jetBlue

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

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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