Cheapest one-way flights from Ontario to Sydney in May from $629

AirHint found the following cheapest one-way flights from Ontario (ONT) to Sydney (SYD) in May 2026 (see full year).

One-Way flights

28 May Alaska Airlines
22 May Alaska Airlines
03 May Alaska Airlines
08 May Philippine Airlines
02 May Alaska Airlines
05 May Alaska Airlines
10 May Alaska Airlines
07 May Japan Airlines
01 May China Airlines
21 May Qatar Airways

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

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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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