Cheapest one-way flights from Ontario to Sydney in September from 323€

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

One-Way flights

06 Sep Alaska Airlines
23 Sep Hawaiian Airlines
09 Sep Hawaiian Airlines
11 Sep Alaska Airlines
05 Sep Frontier Airlines
13 Sep Hawaiian Airlines
01 Sep Hawaiian Airlines
21 Sep Hawaiian Airlines
19 Sep China Airlines
22 Sep China Airlines

Also check the deals for return flights from Ontario to Sydney 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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