Cheapest return flights from Chicago to Keflavik in May from 395€

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

07 May - 14 May Spirit Airlines
10 May - 17 May Spirit Airlines
02 May - 09 May Icelandair direct
07 May - 14 May Icelandair direct
09 May - 19 May jetBlue
07 May - 13 May Icelandair direct
05 May - 12 May Spirit Airlines
03 May - 10 May Spirit Airlines
29 May - 06 Jun Icelandair direct
11 May - 19 May jetBlue
11 May - 18 May Spirit Airlines
31 May - 06 Jun Icelandair direct
28 May - 11 Jun Icelandair direct
21 May - 01 Jun jetBlue
27 May - 01 Jun United
27 May - 01 Jun Icelandair direct
31 May - 08 Jun Icelandair direct
30 May - 07 Jun Icelandair direct
20 May - 01 Jun Icelandair direct

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

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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