Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Singapore to St. Maarten as you normally would.
The Singapore to St. Maarten flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
This is defined as Singapore Changi Airport (SIN) and Simpson Bay Princess Juliana Airport (SXM). Codes like Simpson Bay Princess Juliana Airport are often used to just call airports uniquely.