AirHint found the following cheapest return flights from Miami (MIA) to Rio Negro (MDE) in August 2025 (see full year).

Return flights

14 Aug - 21 Aug	Avianca	direct
21 Aug - 25 Aug	Avianca	direct
15 Aug - 22 Aug	Avianca	direct
19 Aug - 21 Aug	Avianca	direct
08 Aug - 19 Aug	Avianca	direct
05 Aug - 16 Aug	Avianca	direct
11 Aug - 23 Aug	Avianca	direct
07 Aug - 13 Aug	Avianca	direct
06 Aug - 23 Aug	Avianca
03 Aug - 15 Aug	Avianca
22 Aug - 18 Sep	Avianca	direct
28 Aug - 04 Sep	Avianca
30 Aug - 06 Sep	Avianca
01 Aug - 01 Sep	Copa
28 Aug - 01 Sep	Copa
31 Aug - 17 Sep	Copa
03 Aug - 01 Sep	Avianca

Also check the deals for one-way flights from Miami to Rio Negro in August.

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 Miami to Rio Negro in August from 185€

Return flights