Cheapest one-way flights from Ontario to Buenos Aires in September from $1087

Best time to book flights for Ontario (ONT) to Buenos Aires (EZE) flights at AirHint

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

One-Way flights

02 Sep Copa
21 Sep Copa
01 Sep Copa
22 Sep Copa

Also check the deals for return flights from Ontario 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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