Cheapest return flights from San Francisco to Rio Negro in September from $479

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

Return flights

23 Sep - 30 Sep jetBlue
15 Sep - 13 Oct Copa
24 Sep - 28 Sep Copa
24 Sep - 30 Sep Avianca
17 Sep - 24 Sep Copa
10 Sep - 14 Sep Copa
15 Sep - 01 Oct United
08 Sep - 15 Sep Frontier Airlines
12 Sep - 19 Sep United
25 Sep - 29 Sep Frontier Airlines
04 Sep - 09 Sep United
16 Sep - 19 Sep jetBlue

Also check the deals for one-way flights from San Francisco 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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