AirHint found the following cheapest return flights from Boston (BOS) to Sao Paulo (GRU) in May 2026 (see full year).
Return flights
| 01 May - 04 May | Copa | ||
| 26 May - 02 Jun | Avianca | ||
| 02 May - 05 May | Avianca | ||
| 28 May - 04 Jun | Copa | ||
| 01 May - 27 May | LATAM Airlines Group |
Also check the deals for one-way flights from Boston to Sao Paulo in May.
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