AirHint found the following cheapest return flights from Spokane (GEG) to Keflavik (KEF) in December 2025 (see full year).
Return flights
| 09 Dec - 17 Dec | Hawaiian Airlines | ||
| 07 Dec - 14 Dec | Hawaiian Airlines | ||
| 10 Dec - 18 Dec | Hawaiian Airlines | ||
| 12 Dec - 18 Dec | Hawaiian Airlines |
Also check the deals for one-way flights from Spokane to Keflavik in December.
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