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

Return flights

01 Sep - 16 Oct	United
09 Sep - 24 Sep	United
01 Sep - 11 Sep	United
11 Sep - 14 Oct	United
01 Sep - 29 Oct	United
29 Sep - 22 Oct	United
04 Sep - 14 Sep	United
02 Sep - 12 Sep	United
27 Sep - 07 Oct	United
07 Sep - 29 Sep	United
05 Sep - 16 Sep	United
06 Sep - 27 Sep	United
12 Sep - 11 Oct	United

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 792€

Return flights