AirHint found the following cheapest return flights from San Juan (SJU) to Rio Negro (MDE) in August 2026 (see full year).

Return flights

01 Aug - 15 Aug	Avianca	direct
12 Aug - 19 Aug	Copa
04 Aug - 11 Aug	Avianca	direct
12 Aug - 19 Aug	Avianca	direct
26 Aug - 31 Aug	Copa
26 Aug - 31 Aug	Avianca	direct
01 Aug - 09 Aug	Avianca	direct
10 Aug - 31 Aug	Spirit Airlines
10 Aug - 19 Aug	Spirit Airlines
12 Aug - 31 Aug	Spirit Airlines

Also check the deals for one-way 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 return flights from San Juan to Rio Negro in August from 193€

Return flights