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

One-Way flights

01 Aug	Air France
02 Aug	Delta
03 Aug	Air France
04 Aug	Air France
11 Aug	Air France
07 Aug	WestJet
09 Aug	Porter Airlines (Canada) Ltd
08 Aug	WestJet
06 Aug	Porter Airlines (Canada) Ltd
05 Aug	Porter Airlines (Canada) Ltd

Also check the deals for return flights from Chicago to Keflavik in August.

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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Cheapest one-way flights from Chicago to Keflavik in August from $526

One-Way flights