AirHint found the following cheapest return flights from Keflavik (KEF) to Prague (PRG) in December 2025 (see full year).
Return flights
| 30 Dec - 06 Jan | easyJet | ||
| 28 Dec - 01 Jan | TUI | ||
| 31 Dec - 03 Jan | easyJet | ||
| 30 Dec - 02 Jan | easyJet |
Also check the deals for one-way flights from Keflavik to Prague in December.
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