AirHint found the following cheapest return flights from Chicago (MDW) to Buenos Aires (AEP) in January 2026 (see full year).
Return flights
| 28 Jan - 28 Feb | LATAM Airlines Group | ||
| 29 Jan - 28 Feb | LATAM Airlines Group | ||
| 30 Jan - 28 Feb | LATAM Airlines Group | ||
| 14 Jan - 18 Jan | Frontier Airlines |
Also check the deals for one-way flights from Chicago to Buenos Aires in January.
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