AirHint found the following cheapest return flights from San Salvador (SAL) to Rio Negro (MDE) in March 2026 (see full year).

Return flights

17 Mar - 20 Mar	Avianca
04 Mar - 07 Mar	Avianca
19 Mar - 26 Mar	Copa
05 Mar - 08 Mar	Copa
10 Mar - 19 Mar	Copa
15 Mar - 18 Mar	Copa
20 Mar - 23 Mar	Copa
23 Mar - 27 Mar	Copa
07 Mar - 10 Mar	Copa
17 Mar - 23 Mar	Copa
27 Mar - 01 Apr	Copa
25 Mar - 02 Apr	Avianca	direct
26 Mar - 02 Apr	Copa
26 Mar - 02 Apr	Avianca	direct
30 Mar - 04 Apr	Avianca	direct
28 Mar - 01 Apr	Copa
29 Mar - 04 Apr	Avianca
29 Mar - 06 Apr	Avianca
27 Mar - 04 Apr	Copa

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

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 March from $300

Return flights