Cheapest return flights from Ontario to Sydney in December from $1067

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

Return flights

01 Dec - 06 Dec Alaska Airlines
01 Dec - 21 Dec Alaska Airlines
23 Dec - 09 Jan Alaska Airlines
21 Dec - 10 Jan Alaska Airlines
22 Dec - 09 Jan Alaska Airlines
26 Dec - 15 Jan China Airlines
18 Dec - 01 Jan Air New Zealand
15 Dec - 30 Dec China Airlines
13 Dec - 27 Dec China Airlines
27 Dec - 03 Jan China Airlines
25 Dec - 03 Jan China Airlines
29 Dec - 08 Jan China Airlines
18 Dec - 31 Dec Qatar Airways
25 Dec - 02 Jan Qatar Airways
14 Dec - 28 Dec Qatar Airways
24 Dec - 02 Jan Qatar Airways

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

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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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