AirHint found the following cheapest return flights from Mexico City (MEX) to Sao Paulo (GRU) in September 2026 (see full year).
Return flights
| 10 Sep - 17 Sep | Avianca | ||
| 25 Sep - 30 Sep | Avianca | ||
| 03 Sep - 17 Sep | Avianca | ||
| 01 Sep - 01 Oct | Avianca | ||
| 14 Sep - 27 Sep | Avianca |
Also check the deals for one-way flights from Mexico City to Sao Paulo in September.
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