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

Return flights

06 Sep - 20 Sep	Philippine Airlines
04 Sep - 09 Oct	Philippine Airlines
06 Sep - 21 Sep	Philippine Airlines
06 Sep - 27 Sep	Philippine Airlines
03 Sep - 10 Sep	United
10 Sep - 17 Sep	United
01 Sep - 11 Sep	United
01 Sep - 29 Oct	United
25 Sep - 10 Oct	United
26 Sep - 13 Oct	United
15 Sep - 21 Sep	United
22 Sep - 05 Oct	United
18 Sep - 11 Oct	Philippine Airlines
18 Sep - 12 Oct	Philippine Airlines
05 Sep - 14 Sep	WestJet
12 Sep - 05 Oct	United
04 Sep - 11 Sep	Air Canada

Also check the deals for one-way 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 return flights from Toronto to Singapore in September from $892

Return flights