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

Return flights

21 Sep - 29 Sep	Air Canada
06 Sep - 13 Sep	Porter Airlines (Canada) Ltd
01 Sep - 08 Sep	Porter Airlines (Canada) Ltd
30 Sep - 07 Oct	Air Canada
01 Sep - 18 Sep	SWISS
02 Sep - 09 Sep	SWISS
01 Sep - 14 Oct	SWISS
30 Sep - 31 Oct	SWISS
05 Sep - 29 Sep	SWISS
07 Sep - 25 Sep	SWISS
03 Sep - 13 Sep	SWISS
01 Sep - 11 Sep	SWISS
16 Sep - 30 Sep	SWISS
16 Sep - 02 Oct	SWISS
15 Sep - 07 Oct	SWISS
17 Sep - 06 Oct	SWISS
28 Sep - 12 Oct	SWISS
28 Sep - 18 Oct	SWISS
01 Sep - 29 Oct	SWISS
01 Sep - 16 Oct	SWISS

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 914€

Return flights