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

One-Way flights

20 Aug	jetBlue	direct
30 Aug	Spirit Airlines
09 Aug	Spirit Airlines
25 Aug	Spirit Airlines
19 Aug	Copa
27 Aug	jetBlue	direct
19 Aug	Avianca	direct
13 Aug	Spirit Airlines
14 Aug	Avianca	direct
09 Aug	Avianca	direct

Also check the deals for return flights from Rio Negro to San Juan 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 Rio Negro to San Juan in August from $195

One-Way flights