AirHint found the following cheapest return flights from Monterrey (MTY) to Sao Paulo (GRU) in October 2026 (see full year).
Return flights
| 15 Oct - 02 Nov | Copa | ||
| 28 Oct - 02 Nov | Copa | ||
| 23 Oct - 26 Oct | Copa | ||
| 26 Oct - 01 Nov | Copa |
Also check the deals for one-way flights from Monterrey to Sao Paulo in October.
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