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

Return flights

17 Oct - 22 Oct	WestJet
15 Oct - 22 Oct	WestJet
16 Oct - 01 Nov	Alaska Airlines
23 Oct - 01 Nov	Alaska Airlines
24 Oct - 31 Oct	Alaska Airlines
29 Oct - 05 Nov	WestJet
22 Oct - 29 Oct	WestJet
25 Oct - 30 Oct	WestJet
22 Oct - 10 Nov	Flair Airlines
26 Oct - 30 Oct	WestJet
17 Oct - 30 Oct	WestJet
18 Oct - 27 Oct	WestJet
27 Oct - 30 Oct	WestJet
22 Oct - 15 Nov	Alaska Airlines
18 Oct - 15 Nov	Alaska Airlines
20 Oct - 11 Nov	WestJet
31 Oct - 09 Nov	WestJet
28 Oct - 20 Nov	WestJet
25 Oct - 31 Oct	WestJet
29 Oct - 26 Nov	Porter Airlines (Canada) Ltd

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Toronto to Sydney in October from $963

Return flights