AirHint found the following cheapest return flights from Rio Negro (MDE) to San Juan (SJU) in September 2026 (see full year).
Return flights
| 02 Sep - 06 Sep | Avianca | direct | |
| 08 Sep - 14 Sep | jetBlue | direct | |
| 27 Sep - 03 Oct | jetBlue | direct | |
| 02 Sep - 03 Sep | Spirit Airlines | ||
| 02 Sep - 05 Sep | Spirit Airlines |
Also check the deals for one-way flights from Rio Negro to San Juan in September.
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