Cheapest one-way flights from Ontario to Sydney in October from $638

AirHint found the following cheapest one-way flights from Ontario (ONT) to Sydney (SYD) in October 2026 (see full year).

One-Way flights

14 Oct Alaska Airlines
24 Oct China Airlines
13 Oct Alaska Airlines
19 Oct China Airlines
05 Oct China Airlines
16 Oct China Airlines
17 Oct jetBlue

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

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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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