Cheapest return flights from Houston to Rio Negro in September from $328

AirHint found the following cheapest return flights from Houston (IAH) to Rio Negro (MDE) in September 2025 (see full year).

Return flights

30 Sep - 17 Oct Spirit Airlines
27 Sep - 17 Oct Spirit Airlines
30 Sep - 21 Oct Spirit Airlines
30 Sep - 14 Oct Spirit Airlines
30 Sep - 20 Oct Spirit Airlines
30 Sep - 01 Oct Spirit Airlines
30 Sep - 18 Oct Spirit Airlines
27 Sep - 14 Oct Spirit Airlines
27 Sep - 28 Sep Spirit Airlines
27 Sep - 30 Sep Spirit Airlines
27 Sep - 01 Oct Spirit Airlines
26 Sep - 17 Oct Spirit Airlines
27 Sep - 29 Sep Spirit Airlines
21 Sep - 28 Sep Spirit Airlines
22 Sep - 29 Sep Spirit Airlines
23 Sep - 29 Sep Spirit Airlines
26 Sep - 30 Sep Spirit Airlines
21 Sep - 30 Sep Spirit Airlines
22 Sep - 30 Sep Spirit Airlines
18 Sep - 30 Sep Spirit Airlines

Also check the deals for one-way flights from Houston 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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