AirHint found the following cheapest return flights from Chicago (ORD) to Buenos Aires (EZE) in July 2026 (see full year).
Return flights
| 10 Jul - 26 Jul | Frontier Airlines | ||
| 04 Jul - 31 Jul | Frontier Airlines | ||
| 11 Jul - 26 Jul | Arajet | ||
| 18 Jul - 01 Aug | Arajet | ||
| 29 Jul - 15 Aug | Spirit Airlines |
Also check the deals for one-way flights from Chicago to Buenos Aires in July.
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