AirHint found the following cheapest one-way flights from Washington (IAD) to Sao Paulo (GRU) in December 2025 (see full year).
One-Way flights
| 06 Dec | Frontier Airlines | ||
| 31 Dec | Frontier Airlines | ||
| 23 Dec | Frontier Airlines | ||
| 29 Dec | Breeze Airways | ||
| 02 Dec | Avianca | ||
| 04 Dec | Avianca | ||
| 01 Dec | Copa | ||
| 05 Dec | Avianca | ||
| 15 Dec | Breeze Airways | ||
| 07 Dec | Avianca |
Also check the deals for return flights from Washington to Sao Paulo in December.
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