Cheapest one-way flights from Buffalo to Rio Negro in September from $189

AirHint found the following cheapest one-way flights from Buffalo (BUF) to Rio Negro (MDE) in September 2025 (see full year).

One-Way flights

21 Sep Frontier Airlines

Also check the deals for return flights from Buffalo to Rio Negro in September.

Skyscanner

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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