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

Return flights

22 Aug - 26 Aug	Copa
23 Aug - 27 Aug	Copa
23 Aug - 27 Aug	Avianca	direct
21 Aug - 28 Aug	Avianca
23 Aug - 30 Aug	Copa
18 Aug - 23 Aug	Copa
18 Aug - 21 Aug	Copa
19 Aug - 22 Aug	Avianca	direct
20 Aug - 27 Aug	Copa
30 Aug - 01 Sep	Avianca
17 Aug - 18 Aug	Avianca
27 Aug - 02 Sep	Avianca
27 Aug - 01 Sep	Avianca
31 Aug - 07 Sep	Avianca	direct
29 Aug - 01 Sep	Avianca
28 Aug - 09 Sep	Avianca
28 Aug - 06 Sep	Avianca
30 Aug - 15 Sep	Spirit Airlines
29 Aug - 15 Sep	Spirit Airlines
31 Aug - 15 Sep	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 179€

Return flights