Getting to some of Tasmania's more remote locations requires a bit of help from specialist air service providers.
Par Avion provide flight services between Cambridge in Hobart and Melaleuca. This service is the fastest way to access the South Coast and Port Davey tracks. Cost is around $400 return (check website for more details), and baggage limits apply. Par Avion can also provide fuel for cooking on your trip as well.
Sharp Airlines provide a number of services including air links to Flinders and King Islands. Check the website for up to date pricing and departure points.