Cheapest return flights from Chicago to Keflavik in August from 765€

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

Return flights

24 Aug - 31 Aug Southwest Airlines
25 Aug - 01 Sep Southwest Airlines
26 Aug - 02 Sep Southwest Airlines
20 Aug - 27 Aug Southwest Airlines
17 Aug - 26 Aug Southwest Airlines
18 Aug - 25 Aug Southwest Airlines
27 Aug - 03 Sep Southwest Airlines
19 Aug - 26 Aug Southwest Airlines
23 Aug - 30 Aug Southwest Airlines
30 Aug - 06 Sep Southwest Airlines
22 Aug - 29 Aug Air France
21 Aug - 28 Aug Southwest Airlines
29 Aug - 05 Sep Virgin Atlantic
31 Aug - 07 Sep Virgin Atlantic
28 Aug - 04 Sep KLM
02 Aug - 09 Aug KLM
03 Aug - 10 Aug Southwest Airlines

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

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