Cheapest return flights from Boston to Sao Paulo in December from $599

Best time to book flights for Boston (BOS) to Sao Paulo (GRU) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Sao Paulo (GRU) in December 2025 (see full year).

Return flights

11 Dec - 01 Jan Copa
22 Dec - 12 Jan Copa
14 Dec - 04 Jan LATAM Airlines Group
17 Dec - 04 Jan LATAM Airlines Group
11 Dec - 01 Jan LATAM Airlines Group direct
19 Dec - 04 Jan LATAM Airlines Group
21 Dec - 11 Jan Delta
30 Dec - 03 Jan jetBlue
19 Dec - 04 Jan LATAM Airlines Group direct

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

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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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