Cheapest one-way flights from Chicago to Keflavik in March from 390€

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

One-Way flights

31 Mar Icelandair direct
24 Mar Lufthansa
25 Mar SWISS
29 Mar Spirit Airlines
29 Mar Icelandair direct
26 Mar Frontier Airlines
27 Mar Frontier Airlines
28 Mar Frontier Airlines
24 Mar Icelandair direct
25 Mar Icelandair direct

Also check the deals for return flights from Chicago to Keflavik in March.

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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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