Cheapest one-way flights from Ontario to Sydney in April from $457

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 April 2025 (see full year).

One-Way flights

29 Apr Frontier Airlines
22 Apr Frontier Airlines
17 Apr Frontier Airlines
19 Apr Frontier Airlines
15 Apr Frontier Airlines
05 Apr Frontier Airlines
08 Apr Frontier Airlines
09 Apr Frontier Airlines
10 Apr Frontier Airlines
24 Apr Frontier Airlines

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

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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