Cheapest return flights from Ontario to Sydney in October from $1058

Best time to book flights for Ontario (ONT) to Sydney (SYD) flights at AirHint

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

Return flights

22 Oct - 28 Oct Hawaiian Airlines
24 Oct - 04 Nov Hawaiian Airlines
19 Oct - 01 Nov Hawaiian Airlines
02 Oct - 15 Oct Alaska Airlines
13 Oct - 28 Oct China Airlines
18 Oct - 31 Oct China Airlines
13 Oct - 27 Oct China Airlines
07 Oct - 24 Oct China Airlines
01 Oct - 31 Oct China Airlines
02 Oct - 26 Oct Qatar Airways

Also check the deals for one-way 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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