Cheapest return flights from Chicago to Keflavik in March from 307€

Best time to book flights for Chicago (MDW) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Chicago (MDW) to Keflavik (KEF) in March 2025 (see full year).

Return flights

03 Mar - 11 Mar Frontier Airlines
17 Mar - 02 Apr Frontier Airlines
21 Mar - 26 Mar Frontier Airlines
03 Mar - 09 Mar Frontier Airlines
16 Mar - 23 Mar Porter Airlines (Canada) Ltd
28 Mar - 04 Apr Frontier Airlines
18 Mar - 02 Apr Frontier Airlines
07 Mar - 16 Mar Frontier Airlines
08 Mar - 13 Mar Frontier Airlines
08 Mar - 16 Mar Porter Airlines (Canada) Ltd
22 Mar - 30 Mar Delta

Also check the deals for one-way 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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