AirHint found the following cheapest return flights from Ontario (ONT) to Sao Paulo (GRU) in December 2026 (see full year).
Return flights
| 24 Dec - 31 Dec | GOL Linhas Aรฉreas | ||
| 25 Dec - 01 Jan | GOL Linhas Aรฉreas | ||
| 16 Dec - 23 Dec | LATAM Airlines Group |
Also check the deals for one-way flights from Ontario to Sao Paulo in December.
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