AirHint found the following cheapest return flights from Chicago (ORD) to Sao Paulo (GRU) in September 2026 (see full year).
Return flights
| 16 Sep - 20 Sep | Avianca | ||
| 29 Sep - 12 Oct | Air Canada | ||
| 13 Sep - 20 Sep | Copa | ||
| 15 Sep - 20 Sep | Air Canada | ||
| 01 Sep - 11 Sep | Copa | ||
| 13 Sep - 20 Sep | United | direct | |
| 29 Sep - 12 Oct | United | direct |
Also check the deals for one-way flights from Chicago to Sao Paulo in September.
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