AirHint found the following cheapest return flights from Rotterdam (RTM) to Keflavik (KEF) in January 2026 (see full year).
Return flights
| 04 Jan - 08 Jan | transavia | ||
| 23 Jan - 25 Jan | transavia | ||
| 03 Jan - 07 Jan | transavia | ||
| 02 Jan - 06 Jan | transavia |
Also check the deals for one-way flights from Rotterdam to Keflavik in January.
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