Cheapest return flights from Phoenix to Rio Negro in August from $414

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

Return flights

15 Aug - 21 Aug Spirit Airlines
15 Aug - 18 Aug Spirit Airlines
18 Aug - 25 Aug Spirit Airlines
06 Aug - 13 Aug Spirit Airlines
16 Aug - 23 Aug Allegiant Air
25 Aug - 09 Sep United
19 Aug - 26 Aug Frontier Airlines
20 Aug - 27 Aug Allegiant Air

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

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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