AirHint found the following cheapest one-way flights from Chicago (MDW) to Buenos Aires (AEP) in January 2026 (see full year).
One-Way flights
| 05 Jan | Frontier Airlines | ||
| 15 Jan | Frontier Airlines | ||
| 14 Jan | Frontier Airlines | ||
| 20 Jan | LATAM Airlines Group | ||
| 17 Jan | LATAM Airlines Group | ||
| 06 Jan | LATAM Airlines Group |
Also check the deals for return flights from Chicago to Buenos Aires in January.
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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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