AirHint found the following cheapest return flights from Denver (DEN) to Keflavik (KEF) in August 2026 (see full year).
Return flights
| 12 Aug - 21 Aug | United | ||
| 12 Aug - 21 Aug | Icelandair | direct | |
| 09 Aug - 16 Aug | WestJet | ||
| 08 Aug - 16 Aug | WestJet | ||
| 09 Aug - 16 Aug | Icelandair | direct | |
| 08 Aug - 16 Aug | Icelandair | direct |
Also check the deals for one-way flights from Denver to Keflavik in August.
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