AirHint found the following cheapest return flights from Boston (BOS) to Sao Paulo (GRU) in May 2026 (see full year).
Return flights
| 08 May - 20 May | LATAM Airlines Group | ||
| 09 May - 28 May | LATAM Airlines Group | ||
| 12 May - 19 May | LATAM Airlines Group | ||
| 09 May - 20 May | Avianca | ||
| 11 May - 17 May | Delta | direct | |
| 12 May - 18 May | Avianca |
Also check the deals for one-way flights from Boston to Sao Paulo in May.
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