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

Return flights

13 Aug - 17 Aug	Avianca
15 Aug - 22 Aug	Avianca	direct
10 Aug - 13 Aug	Avianca
17 Aug - 24 Aug	Avianca	direct
13 Aug - 20 Aug	Avianca
14 Aug - 18 Aug	Avianca
18 Aug - 25 Aug	Avianca
11 Aug - 15 Aug	Avianca
12 Aug - 16 Aug	Avianca
10 Aug - 13 Aug	Avianca	direct
22 Aug - 01 Sep	Copa
20 Aug - 02 Sep	Copa
21 Aug - 03 Sep	Copa

Also check the deals for one-way flights from San Salvador 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 Salvador to Rio Negro in August from $226

Return flights