Cheapest one-way flights from Ontario to Sydney in October from $479

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

One-Way flights

01 Oct Hawaiian Airlines
19 Oct Hawaiian Airlines
29 Oct Hawaiian Airlines
15 Oct Hawaiian Airlines
12 Oct Hawaiian Airlines
16 Oct Hawaiian Airlines
08 Oct Philippine Airlines
13 Oct China Airlines
22 Oct China Airlines
24 Oct China Airlines

Also check the deals for return flights from Ontario to Sydney in October.

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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