Cheapest return flights from Chicago to Keflavik in March from $531

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

Return flights

02 Mar - 09 Mar Icelandair direct
24 Mar - 31 Mar jetBlue
01 Mar - 08 Mar Frontier Airlines
17 Mar - 25 Mar Icelandair direct
29 Mar - 08 Apr Icelandair direct
04 Mar - 11 Mar jetBlue
24 Mar - 31 Mar Icelandair direct
29 Mar - 15 Apr Icelandair direct
04 Mar - 09 Mar jetBlue
04 Mar - 09 Mar Icelandair direct
06 Mar - 10 Mar Icelandair direct
19 Mar - 24 Mar Scandinavian Airlines
25 Mar - 03 Apr Spirit Airlines
29 Mar - 04 Apr Icelandair
26 Mar - 03 Apr Air Canada
28 Mar - 01 Apr jetBlue
25 Mar - 03 Apr Icelandair direct
26 Mar - 05 Apr Icelandair direct
26 Mar - 03 Apr Icelandair direct
28 Mar - 01 Apr Icelandair direct

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

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