Due to multiple factors, expect to potentially pay more when booking in December. For low rates, March can be a great choice for travel to Worcester, Massachusetts. Flights to Worcester, Massachusetts from Singapore in March are about S$ 1,469 on average during March, but can be found for as low as S$ 1,272.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Singapore to Worcester, Massachusetts as you normally would.