AirHint found the following cheapest one-way flights from Boston (BOS) to Sao Paulo (GRU) in October 2025 (see full year).

One-Way flights

30 Oct	Avianca
28 Oct	GOL Linhas Aéreas
19 Oct	Avianca
24 Oct	Spirit Airlines
25 Oct	Avianca
26 Oct	LATAM Airlines Group
25 Oct	LATAM Airlines Group	direct
27 Oct	Delta	direct
06 Oct	Delta	direct
12 Oct	Delta	direct

Also check the deals for return flights from Boston to Sao Paulo in October.

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 one-way flights from Boston to Sao Paulo in October from 196€

One-Way flights