AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Keflavik (KEF) in September 2026 (see full year).
Return flights
| 02 Sep - 06 Sep | KLM | ||
| 26 Sep - 03 Oct | Delta | ||
| 26 Sep - 03 Oct | Icelandair | direct | |
| 02 Sep - 06 Sep | Icelandair | direct | |
| 18 Sep - 26 Sep | Icelandair | direct |
Also check the deals for one-way flights from Raleigh-durham to Keflavik in September.
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