Cheapest return flights from Chicago to Buenos Aires in December from $1876
AirHint found the following cheapest return flights from Chicago (MDW) to Buenos Aires (AEP) in December 2025 (see full year).
Return flights
| 20 Dec - 04 Jan | Porter Airlines (Canada) Ltd | ||
| 26 Dec - 06 Jan | LATAM Airlines Group | ||
| 25 Dec - 04 Jan | LATAM Airlines Group | ||
| 25 Dec - 06 Jan | LATAM Airlines Group |
Also check the deals for one-way flights from Chicago to Buenos Aires in December.
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.
