Cheapest one-way flights from Chicago to Keflavik in August from 203€

AirHint found the following cheapest one-way flights from Chicago (ORD) to Keflavik (KEF) in August 2025 (see full year).

One-Way flights

23 Aug Spirit Airlines
30 Aug Spirit Airlines
22 Aug Frontier Airlines
17 Aug Spirit Airlines
29 Aug Spirit Airlines
28 Aug Frontier Airlines
18 Aug Frontier Airlines
16 Aug Frontier Airlines
19 Aug WestJet
20 Aug Spirit Airlines

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

Skyscanner

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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