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

Return flights

04 Mar - 17 Mar	Copa
11 Mar - 19 Mar	Copa
04 Mar - 11 Mar	Copa
05 Mar - 12 Mar	Copa
09 Mar - 16 Mar	Copa
07 Mar - 18 Mar	Copa
15 Mar - 23 Mar	Copa
17 Mar - 31 Mar	Copa
18 Mar - 01 Apr	Copa
17 Mar - 01 Apr	Copa
18 Mar - 02 Apr	Copa
19 Mar - 08 Apr	Copa
20 Mar - 22 Mar	Copa
02 Mar - 10 Mar	Delta	direct
11 Mar - 11 Apr	Delta	direct
27 Mar - 11 Apr	LATAM Airlines Group	direct
15 Mar - 03 Apr	American Airlines
30 Mar - 04 Apr	Delta	direct
25 Mar - 13 Apr	GOL Linhas Aéreas

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

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 Boston to Sao Paulo in March from 335€

Return flights