Cheapest one-way flights from Ontario to Sydney in October from 394€

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

One-Way flights

31 Oct Frontier Airlines
22 Oct Alaska Airlines
26 Oct Frontier Airlines
23 Oct Hawaiian Airlines
18 Oct Hawaiian Airlines
30 Oct Hawaiian Airlines
24 Oct Hawaiian Airlines
16 Oct Hawaiian Airlines
21 Oct Hawaiian Airlines
08 Oct Hawaiian 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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