Cheapest return flights from Chicago to Keflavik in May from $465

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 May 2025 (see full year).

Return flights

11 May - 19 May Spirit Airlines
13 May - 20 May jetBlue
11 May - 18 May jetBlue
02 May - 08 May Spirit Airlines
02 May - 11 May Icelandair direct
02 May - 04 May Icelandair direct
07 May - 16 May Icelandair direct
02 May - 08 May Icelandair direct
03 May - 08 May Icelandair direct
26 May - 02 Jun Icelandair direct
07 May - 14 May Icelandair direct
28 May - 11 Jun Icelandair direct
28 May - 09 Jun Icelandair direct
30 May - 06 Jun Icelandair direct
28 May - 04 Jun Icelandair direct
25 May - 01 Jun jetBlue
30 May - 15 Jun Spirit Airlines
31 May - 07 Jun Icelandair direct
30 May - 15 Jun Icelandair direct
25 May - 01 Jun Icelandair direct

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

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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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