Cheapest return flights from Ontario to Sydney in October from $1035

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

Return flights

01 Oct - 11 Oct Alaska Airlines
20 Oct - 27 Oct Alaska Airlines
02 Oct - 12 Oct Air New Zealand
03 Oct - 18 Oct China Airlines
09 Oct - 26 Oct China Airlines
18 Oct - 31 Oct Qatar Airways
01 Oct - 15 Oct Qatar Airways

Also check the deals for one-way 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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