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

Return flights

29 Aug - 01 Sep	Copa
21 Aug - 28 Aug	Copa
21 Aug - 26 Aug	Copa
22 Aug - 27 Aug	Copa
16 Aug - 20 Aug	Copa
30 Aug - 08 Sep	Copa
22 Aug - 29 Aug	Avianca
19 Aug - 25 Aug	Avianca
23 Aug - 29 Aug	Avianca
20 Aug - 27 Aug	Avianca
26 Aug - 31 Aug	Avianca
25 Aug - 10 Sep	Avianca
21 Aug - 24 Aug	Avianca

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 212€

Return flights