Cheapest return flights from Chicago to Keflavik in May from 461€

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

Return flights

25 May - 01 Jun Icelandair direct
26 May - 02 Jun Icelandair direct
27 May - 03 Jun Icelandair direct
19 May - 26 May Icelandair direct
06 May - 12 May Icelandair direct
10 May - 20 May Icelandair direct
10 May - 09 Jun Icelandair direct
17 May - 23 May Icelandair direct
29 May - 05 Jun Icelandair
30 May - 06 Jun Icelandair
28 May - 04 Jun jetBlue
31 May - 07 Jun jetBlue
30 May - 06 Jun Icelandair direct
31 May - 07 Jun Icelandair direct
15 May - 25 May Icelandair direct
20 May - 27 May Icelandair direct
24 May - 31 May Icelandair direct
21 May - 28 May Icelandair direct
23 May - 31 May Icelandair direct
22 May - 31 May United direct

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

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