Cheapest return flights from Chicago to Keflavik in May from 480€

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

Return flights

21 May - 28 May Finnair
18 May - 25 May Finnair
14 May - 21 May Finnair
18 May - 25 May Icelandair direct
22 May - 29 May Icelandair direct
23 May - 30 May Icelandair direct
24 May - 31 May Icelandair direct
09 May - 16 May Icelandair direct
10 May - 17 May Icelandair direct
14 May - 21 May Icelandair direct

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

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