Cheapest return flights from Chicago to Rio Negro in March from $490

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

Return flights

09 Mar - 16 Mar Frontier Airlines
03 Mar - 08 Mar LATAM Airlines Group
04 Mar - 11 Mar LATAM Airlines Group
19 Mar - 04 Apr Frontier Airlines
26 Mar - 30 Mar Frontier Airlines
19 Mar - 03 Apr Frontier Airlines
30 Mar - 02 Apr LATAM Airlines Group
22 Mar - 29 Mar LATAM Airlines Group

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

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