AirHint found the following cheapest one-way flights from Toronto (YYZ) to Singapore (SIN) in September 2025 (see full year).

One-Way flights

10 Sep	Porter Airlines (Canada) Ltd
16 Sep	Porter Airlines (Canada) Ltd
06 Sep	Porter Airlines (Canada) Ltd
12 Sep	Porter Airlines (Canada) Ltd
14 Sep	WestJet
01 Sep	United
28 Sep	Air Canada
05 Sep	Air Canada
29 Sep	China Southern

Also check the deals for return flights from Toronto to Singapore 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 one-way flights from Toronto to Singapore in September from 389€

One-Way flights