To save up to 5% on this flight, we recommend booking at least 40 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ontario to Singapore from $1,002 1-2 weeks out and tickets from $1,013 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in May. For low rates, September can be a great choice for travel to Singapore. Flights to Singapore from Ontario in September are about $908 on average during September, but can be found for as low as $697.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Singapore as you normally would.