AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Keflavik (KEF) in September 2026 (see full year).
Return flights
| 19 Sep - 27 Sep | Air Canada | ||
| 20 Sep - 27 Sep | Air Canada | ||
| 19 Sep - 27 Sep | Icelandair | direct | |
| 20 Sep - 27 Sep | Icelandair | direct |
Also check the deals for one-way flights from Raleigh-durham to Keflavik in September.
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