Cheapest one-way flights from Ontario to Sydney in December from $768

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

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

One-Way flights

10 Dec Hawaiian Airlines
09 Dec Hawaiian Airlines
11 Dec Hawaiian Airlines
27 Dec China Airlines
31 Dec Japan Airlines
28 Dec China Airlines
25 Dec China Airlines
14 Dec Hawaiian Airlines
12 Dec Hawaiian Airlines
20 Dec China Airlines

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

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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