Cheapest return flights from Ontario to Sydney in August from $1154

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 August 2025 (see full year).

Return flights

30 Aug - 07 Sep Alaska Airlines
23 Aug - 15 Sep Alaska Airlines
05 Aug - 20 Aug Alaska Airlines
29 Aug - 12 Sep Alaska Airlines
01 Aug - 10 Aug Alaska Airlines
11 Aug - 31 Aug Alaska Airlines
13 Aug - 24 Aug Alaska Airlines
27 Aug - 03 Sep Alaska Airlines
08 Aug - 18 Aug Alaska Airlines
04 Aug - 11 Aug Alaska Airlines
05 Aug - 28 Aug China Airlines
06 Aug - 13 Aug China Airlines
01 Aug - 08 Aug China Airlines
05 Aug - 02 Sep Qatar Airways
21 Aug - 03 Sep Qatar Airways
10 Aug - 17 Aug Qatar Airways
25 Aug - 03 Sep Japan Airlines

Also check the deals for one-way flights from Ontario to Sydney in August.

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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