Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hamilton to Heidelberg as you normally would.
Hamilton (HLZ) is the airport you will fly out of if you book a flight from Hamilton to Heidelberg. You should not have trouble finding flights to Heidelberg from Hamilton; the airport handles an average of 0 outbound flights to Heidelberg per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Hamilton airport to Heidelberg. It is only a 10.1 km journey to Hamilton (HLZ) from Hamilton’s city centre.