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

Return flights

25 Mar - 11 Apr	Alaska Airlines
12 Mar - 22 Mar	Hawaiian Airlines
03 Mar - 13 Mar	Hawaiian Airlines
15 Mar - 28 Mar	Hawaiian Airlines
03 Mar - 30 Apr	China Airlines
31 Mar - 10 Apr	China Airlines
30 Mar - 09 Apr	China Airlines
08 Mar - 11 Mar	China Airlines
30 Mar - 06 Apr	China Airlines
17 Mar - 31 Mar	Qatar Airways
02 Mar - 06 Apr	Qatar Airways

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

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 March from $1052

Return flights