AirHint found the following cheapest return flights from Washington (IAD) to Sao Paulo (GRU) in April 2026 (see full year).
Return flights
| 02 Apr - 07 Apr | Frontier Airlines | ||
| 16 Apr - 23 Apr | Avianca | ||
| 13 Apr - 20 Apr | GOL Linhas Aéreas | ||
| 27 Apr - 09 May | GOL Linhas Aéreas | ||
| 01 Apr - 14 Apr | Frontier Airlines |
Also check the deals for one-way flights from Washington to Sao Paulo in April.
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