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

Return flights

05 Jul - 20 Jul	China Airlines
20 Jul - 27 Jul	China Airlines
22 Jul - 29 Jul	China Airlines
27 Jul - 03 Aug	China Airlines
29 Jul - 05 Aug	China Airlines
31 Jul - 07 Aug	China Airlines
17 Jul - 29 Jul	China Airlines
17 Jul - 24 Jul	China Airlines
24 Jul - 31 Jul	China Airlines
06 Jul - 13 Jul	China Airlines
08 Jul - 15 Jul	China Airlines
10 Jul - 17 Jul	China Airlines
13 Jul - 20 Jul	China Airlines
28 Jul - 04 Aug	Qatar Airways
30 Jul - 06 Aug	Qatar Airways
26 Jul - 02 Aug	Qatar Airways
14 Jul - 18 Aug	Qatar Airways
25 Jul - 01 Aug	Qatar Airways

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

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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Cheapest return flights from Ontario to Sydney in July from $1598

Return flights