Cheapest return flights from Chicago to Keflavik in April from $708

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

Return flights

16 Apr - 23 Apr Delta
25 Apr - 02 May Air France
30 Apr - 03 May Air France
26 Apr - 03 May Air France
14 Apr - 21 Apr Southwest Airlines
10 Apr - 17 Apr Air France
10 Apr - 18 Apr Air France
08 Apr - 15 Apr Delta
11 Apr - 18 Apr Air France
15 Apr - 22 Apr Delta
20 Apr - 27 Apr Delta
09 Apr - 16 Apr Delta
12 Apr - 19 Apr Air France

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

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