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

Return flights

10 Mar - 17 Mar	China Airlines
03 Mar - 10 Mar	China Airlines
01 Mar - 08 Mar	China Airlines
27 Mar - 10 Apr	China Airlines
26 Mar - 10 Apr	China Airlines
21 Mar - 29 Mar	China Airlines
01 Mar - 20 Mar	China Airlines
17 Mar - 24 Mar	China Airlines
13 Mar - 20 Mar	China Airlines
30 Mar - 06 Apr	China Airlines
06 Mar - 13 Mar	China Airlines
20 Mar - 27 Mar	China Airlines
27 Mar - 05 Apr	China Airlines
22 Mar - 29 Mar	China Airlines
27 Mar - 03 Apr	China Airlines
26 Mar - 02 Apr	China Airlines
03 Mar - 14 Apr	Qatar Airways
17 Mar - 04 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 1631€

Return flights