Cheapest return flights from Chicago to Keflavik in June from $914

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

Return flights

23 Jun - 30 Jun Southwest Airlines
02 Jun - 13 Jun Southwest Airlines
24 Jun - 03 Jul Southwest Airlines
23 Jun - 03 Jul Southwest Airlines
23 Jun - 27 Jun Southwest Airlines
15 Jun - 27 Jun Southwest Airlines
27 Jun - 04 Jul Southwest Airlines

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

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