Cheapest return flights from Ontario to Singapore in September from $957

Best time to book flights for Ontario (ONT) to Singapore (SIN) flights at AirHint

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

Return flights

04 Sep - 11 Sep China Airlines
10 Sep - 17 Sep China Airlines
15 Sep - 22 Sep China Airlines
04 Sep - 08 Sep China Airlines
08 Sep - 21 Sep China Airlines
08 Sep - 22 Sep STARLUX Airlines
29 Sep - 06 Oct STARLUX Airlines
12 Sep - 04 Oct STARLUX Airlines
18 Sep - 04 Oct China Airlines
23 Sep - 28 Sep China Airlines

Also check the deals for one-way flights from Ontario to Singapore in September.

Skyscanner

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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