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

Return flights

10 Sep - 17 Sep	Porter Airlines (Canada) Ltd
03 Sep - 06 Sep	Porter Airlines (Canada) Ltd
11 Sep - 20 Sep	Air Canada
09 Sep - 20 Sep	Air Canada
04 Sep - 17 Sep	Porter Airlines (Canada) Ltd
02 Sep - 21 Sep	Air Canada
26 Sep - 18 Oct	Air Canada
08 Sep - 23 Sep	Emirates
19 Sep - 23 Sep	Emirates
04 Sep - 19 Sep	Emirates
26 Sep - 13 Oct	Emirates
26 Sep - 05 Oct	Emirates
05 Sep - 18 Sep	Emirates
03 Sep - 03 Oct	Emirates
22 Sep - 03 Oct	Emirates
16 Sep - 05 Oct	Emirates
15 Sep - 05 Oct	Emirates
15 Sep - 20 Oct	Emirates
12 Sep - 19 Oct	Emirates

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

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 September from $1207

Return flights