AirHint found the following cheapest return flights from Sao Paulo (GRU) to Keflavik (KEF) in September 2026 (see full year).
Return flights
| 07 Sep - 20 Sep | United | ||
| 15 Sep - 23 Sep | United | ||
| 30 Sep - 11 Oct | Royal Air Maroc | ||
| 23 Sep - 05 Oct | Royal Air Maroc | ||
| 23 Sep - 30 Sep | Royal Air Maroc | ||
| 25 Sep - 11 Oct | Delta |
Also check the deals for one-way flights from Sao Paulo to Keflavik in September.
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