Cheapest return MDW–KEF flights, August

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

Return flights

18 Aug - 25 Aug Virgin Atlantic
24 Aug - 15 Sep KLM
25 Aug - 04 Sep Delta
17 Aug - 24 Aug Delta
01 Aug - 22 Aug Air France
31 Aug - 06 Sep Southwest Airlines
16 Aug - 23 Aug KLM
02 Aug - 08 Aug Porter Airlines (Canada) Ltd
11 Aug - 13 Aug Porter Airlines (Canada) Ltd
08 Aug - 17 Aug Porter Airlines (Canada) Ltd
10 Aug - 14 Aug Frontier Airlines
10 Aug - 13 Aug Frontier Airlines

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

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