Cheapest one-way flights from Chicago to Buenos Aires in September from 275€

AirHint found the following cheapest one-way flights from Chicago (ORD) to Buenos Aires (EZE) in September 2025 (see full year).

One-Way flights

15 Sep Avianca
02 Sep Spirit Airlines
01 Sep Frontier Airlines
26 Sep United

Also check the deals for return flights from Chicago to Buenos Aires in September.

Skyscanner

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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