AirHint found the following cheapest return flights from Denver (DEN) to Sao Paulo (GRU) in December 2025 (see full year).
Return flights
| 24 Dec - 31 Dec | United | ||
| 23 Dec - 16 Jan | Frontier Airlines | ||
| 21 Dec - 18 Jan | United | ||
| 20 Dec - 01 Jan | United | ||
| 27 Dec - 04 Jan | Frontier Airlines | ||
| 27 Dec - 03 Jan | Frontier Airlines | ||
| 24 Dec - 07 Jan | Copa |
Also check the deals for one-way flights from Denver to Sao Paulo in December.
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