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

Return flights

17 Oct - 24 Oct	WestJet
01 Oct - 22 Oct	WestJet
08 Oct - 22 Oct	WestJet
21 Oct - 28 Oct	WestJet
22 Oct - 29 Oct	Porter Airlines (Canada) Ltd
05 Oct - 14 Oct	WestJet
06 Oct - 20 Oct	Porter Airlines (Canada) Ltd
14 Oct - 30 Oct	Porter Airlines (Canada) Ltd
20 Oct - 27 Oct	ANA
01 Oct - 08 Oct	United
06 Oct - 10 Nov	United
18 Oct - 01 Nov	Cathay Pacific
30 Oct - 20 Nov	United
17 Oct - 07 Nov	United
17 Oct - 01 Nov	United
22 Oct - 06 Nov	China Southern

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 717€

Return flights