Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Springfield, Massachusetts to Harrisburg as you normally would.
Harrisburg (MDT) is the airport you will fly into if you book a flight from Springfield to Harrisburg. You should not have trouble finding flights to Harrisburg from Springfield; the airport handles an average of 0 inbound flights from Springfield per day. You should also have plenty of airline options to choose from since 16 airlines have flights to the Harrisburg airport from Springfield. It is only a 8.5 mi journey from Harrisburg (MDT) to Harrisburg’s city center.