Due to multiple factors, expect to potentially pay more when booking in March. For low rates, February can be a great choice for travel to Jamaica. Flights to Jamaica from St. Maarten in February are about $721 on average during February, but can be found for as low as $604.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Maarten to Jamaica as you normally would.