AirHint found the following cheapest return flights from Philadelphia (PHL) to Sao Paulo (GRU) in December 2025 (see full year).
Return flights
| 05 Dec - 09 Dec | Spirit Airlines | ||
| 26 Dec - 11 Jan | Frontier Airlines | ||
| 17 Dec - 21 Dec | Frontier Airlines | ||
| 30 Dec - 03 Jan | GOL Linhas Aéreas |
Also check the deals for one-way flights from Philadelphia to Sao Paulo in December.
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