AirHint found the following cheapest one-way flights from San Juan (SJU) to Rio Negro (MDE) in August 2025 (see full year).

One-Way flights

19 Aug	jetBlue	direct
16 Aug	jetBlue	direct
17 Aug	jetBlue	direct
11 Aug	jetBlue	direct
06 Aug	Copa
28 Aug	Copa
06 Aug	Avianca	direct
28 Aug	Avianca	direct
05 Aug	Spirit Airlines
12 Aug	Spirit Airlines

Also check the deals for return flights from San Juan to Rio Negro in August.

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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Cheapest one-way flights from San Juan to Rio Negro in August from $106

One-Way flights