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

Return flights

15 Oct - 22 Oct	WestJet
15 Oct - 29 Oct	Air Canada
21 Oct - 28 Oct	Air Canada
01 Oct - 08 Oct	Air Canada
08 Oct - 22 Oct	WestJet
07 Oct - 23 Oct	Air Canada
17 Oct - 26 Oct	Flair Airlines
28 Oct - 04 Nov	Cathay Pacific
26 Oct - 17 Nov	Cathay Pacific
31 Oct - 10 Nov	Cathay Pacific
04 Oct - 11 Oct	Porter Airlines (Canada) Ltd
11 Oct - 19 Oct	WestJet
02 Oct - 04 Oct	WestJet
01 Oct - 01 Nov	United
24 Oct - 02 Nov	United
21 Oct - 21 Nov	Air Canada
21 Oct - 20 Nov	Air Canada
21 Oct - 06 Nov	Air Canada
23 Oct - 13 Nov	United
20 Oct - 12 Nov	Air Canada

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

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 October from 833€

Return flights