Cheapest one-way flights from Ontario to Sydney in August from $528

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

One-Way flights

22 Aug Lufthansa
20 Aug Alaska Airlines
07 Aug Alaska Airlines
15 Aug Alaska Airlines
18 Aug Alaska Airlines
21 Aug Alaska Airlines
14 Aug Alaska Airlines
28 Aug Alaska Airlines
26 Aug Hawaiian Airlines
17 Aug Philippine Airlines

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

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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