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

Return flights

05 Sep - 09 Sep	Avianca
13 Sep - 24 Sep	Avianca
11 Sep - 17 Sep	Avianca	direct
08 Sep - 12 Sep	Avianca	direct
26 Sep - 28 Sep	Avianca	direct
01 Sep - 12 Sep	Avianca
01 Sep - 08 Sep	Avianca
04 Sep - 08 Sep	Avianca	direct
13 Sep - 24 Sep	Avianca	direct
17 Sep - 25 Sep	Avianca	direct
29 Sep - 08 Oct	Avianca	direct
30 Sep - 05 Oct	Avianca	direct

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 228€

Return flights