AirHint found the following cheapest return flights from Toronto (YYZ) to Sydney (SYD) in December 2025 (see full year).

Return flights

22 Dec - 14 Jan	Air Canada
10 Dec - 27 Dec	Qantas
01 Dec - 08 Jan	United
12 Dec - 31 Dec	United
11 Dec - 30 Dec	United
12 Dec - 20 Dec	United
23 Dec - 27 Dec	Qantas
23 Dec - 31 Dec	Air Canada
28 Dec - 28 Jan	Air Canada
17 Dec - 31 Dec	United
17 Dec - 07 Jan	United
14 Dec - 20 Dec	Philippine Airlines
20 Dec - 28 Dec	United
20 Dec - 31 Dec	United
21 Dec - 04 Jan	WestJet
18 Dec - 01 Jan	WestJet
19 Dec - 09 Jan	United
20 Dec - 02 Jan	United
16 Dec - 03 Jan	United

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

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 Toronto to Sydney in December from 1225€

Return flights