AirHint found the following cheapest return flights from Chicago (ORD) to Keflavik (KEF) in July 2026 (see full year).

Return flights

15 Jul - 22 Jul	Air Canada
15 Jul - 23 Jul	Air Canada
14 Jul - 21 Jul	Air Canada
13 Jul - 20 Jul	Air Canada
18 Jul - 25 Jul	Air Canada
20 Jul - 28 Jul	Air Canada
04 Jul - 11 Jul	Air Canada
05 Jul - 12 Jul	Air Canada
14 Jul - 22 Jul	Air Canada
18 Jul - 26 Jul	Air Canada
25 Jul - 01 Aug	Icelandair	direct

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

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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Cheapest return flights from Chicago to Keflavik in July from 495€

Return flights