AirHint found the following cheapest return flights from Boston (BOS) to Belo Horizonte (CNF) in September 2025 (see full year).

Return flights

26 Sep - 06 Oct	Copa
23 Sep - 30 Sep	Avianca
27 Sep - 07 Oct	Copa
27 Sep - 06 Oct	Copa
29 Sep - 09 Oct	LATAM Airlines Group
27 Sep - 09 Oct	LATAM Airlines Group
28 Sep - 08 Oct	LATAM Airlines Group
30 Sep - 10 Oct	Copa
23 Sep - 03 Oct	Copa
20 Sep - 30 Sep	Avianca
22 Sep - 02 Oct	Copa
22 Sep - 04 Oct	Copa

Also check the deals for one-way flights from Boston to Belo Horizonte in September.

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 Belo Horizonte in September from $611

Return flights