Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Hobart to Houston as you normally would.
Hobart (HBA) is the airport you will fly out of if you book a flight from Hobart to Houston. You should not have trouble finding flights to Houston from Hobart; the airport handles an average of 0 outbound flights to Houston per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Hobart airport to Houston. It is only a 15.8 km journey to Hobart (HBA) from Hobart’s city centre.