AirHint found the following cheapest return flights from Sao Paulo (GRU) to Keflavik (KEF) in September 2026 (see full year).
Return flights
| 12 Sep - 22 Sep | United | ||
| 25 Sep - 10 Oct | LATAM Airlines Group | ||
| 07 Sep - 18 Sep | United | ||
| 25 Sep - 09 Oct | Avianca | ||
| 29 Sep - 11 Oct | LATAM Airlines Group | ||
| 20 Sep - 01 Oct | Avianca |
Also check the deals for one-way flights from Sao Paulo to Keflavik in September.
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