Cheapest return flights from Chicago to Keflavik in April from $786

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 April 2025 (see full year).

Return flights

07 Apr - 15 Apr Frontier Airlines
30 Apr - 07 May KLM
20 Apr - 26 Apr Allegiant Air
10 Apr - 16 Apr Frontier Airlines
20 Apr - 27 Apr Allegiant Air
10 Apr - 13 Apr Frontier Airlines
14 Apr - 28 Apr KLM
20 Apr - 29 Apr Porter Airlines (Canada) Ltd

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

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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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