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

Return flights

04 Jun - 11 Jun	Air Canada
06 Jun - 13 Jun	Air Canada
05 Jun - 12 Jun	Icelandair	direct
06 Jun - 13 Jun	Icelandair	direct
14 Jun - 04 Jul	United
18 Jun - 11 Jul	Air Canada
04 Jun - 11 Jun	Icelandair	direct
01 Jun - 27 Jun	Icelandair	direct
24 Jun - 18 Jul	Icelandair	direct
23 Jun - 18 Jul	Icelandair	direct
14 Jun - 04 Jul	Icelandair	direct
18 Jun - 11 Jul	Icelandair	direct

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

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 June from 507€

Return flights