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

Return flights

19 Aug - 26 Aug	Copa
12 Aug - 19 Aug	Copa
11 Aug - 18 Aug	Copa
16 Aug - 18 Aug	Copa
13 Aug - 18 Aug	Copa
23 Aug - 29 Aug	Avianca	direct
30 Aug - 03 Sep	Avianca	direct
15 Aug - 19 Aug	Copa
21 Aug - 24 Aug	Copa
11 Aug - 05 Sep	Copa
19 Aug - 26 Aug	Avianca	direct
19 Aug - 27 Aug	Avianca	direct
31 Aug - 04 Sep	Avianca	direct
27 Aug - 02 Sep	Avianca
29 Aug - 05 Sep	Avianca
29 Aug - 15 Sep	Spirit Airlines
29 Aug - 14 Sep	Spirit Airlines
30 Aug - 15 Sep	Spirit Airlines
30 Aug - 14 Sep	Spirit Airlines
29 Aug - 08 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 178€

Return flights