AirHint found the following cheapest return flights from Chicago (ORD) to Keflavik (KEF) in August 2026 (see full year).
Return flights
| 24 Aug - 01 Sep | United | direct | |
| 01 Aug - 08 Aug | Air Canada | ||
| 07 Aug - 17 Aug | SWISS | ||
| 01 Aug - 08 Aug | Icelandair | direct | |
| 08 Aug - 14 Aug | Delta |
Also check the deals for one-way flights from Chicago to Keflavik in August.
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