AirHint found the following cheapest return flights from Sandefjord (TRF) to Keflavik (KEF) in September 2026 (see full year).
Return flights
| 19 Sep - 28 Sep | Ryanair | ||
| 06 Sep - 13 Sep | Wideroe | ||
| 10 Sep - 17 Sep | Lufthansa |
Also check the deals for one-way flights from Sandefjord to Keflavik in September.
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