AirHint found the following cheapest return flights from Sao Paulo (GRU) to Boston (BOS) in May 2026 (see full year).

Return flights

08 May - 19 May	GOL Linhas Aéreas
18 May - 27 May	Copa
07 May - 13 May	Copa
21 May - 25 May	Copa
18 May - 28 May	Copa
01 May - 18 May	Avianca
01 May - 17 May	Avianca
11 May - 21 May	Avianca
18 May - 02 Jun	GOL Linhas Aéreas
25 May - 01 Jun	Delta
31 May - 07 Jun	Delta
31 May - 08 Jun	Delta
15 May - 23 May	GOL Linhas Aéreas
05 May - 19 May	Copa
04 May - 18 Jun	GOL Linhas Aéreas
16 May - 01 Jun	Delta
11 May - 11 Jun	Copa
12 May - 04 Jun	GOL Linhas Aéreas
31 May - 04 Jun	GOL Linhas Aéreas
24 May - 08 Jun	Delta

Also check the deals for one-way flights from Sao Paulo to Boston in May.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Sao Paulo to Boston in May from $492

Return flights