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

Return flights

08 Sep - 12 Sep	Avianca
11 Sep - 18 Sep	Avianca
28 Sep - 30 Sep	Avianca
23 Sep - 27 Sep	Avianca
11 Sep - 14 Sep	Avianca
09 Sep - 14 Sep	Avianca
11 Sep - 16 Sep	Avianca
09 Sep - 13 Sep	Avianca
25 Sep - 29 Sep	Avianca
09 Sep - 11 Sep	Avianca
30 Sep - 12 Oct	Copa
28 Sep - 02 Oct	Avianca
30 Sep - 05 Oct	Avianca

Also check the deals for one-way flights from San Salvador to Rio Negro in September.

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 September from 198€

Return flights