AirHint found the following cheapest return flights from Boston (BOS) to Sao Paulo (GRU) in December 2026 (see full year).
Return flights
| 14 Dec - 24 Dec | Air Canada | ||
| 27 Dec - 03 Jan | Air Canada | ||
| 13 Dec - 03 Jan | Air Canada | ||
| 28 Dec - 03 Jan | Air Canada |
Also check the deals for one-way flights from Boston to Sao Paulo in December.
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