Indonesia is an archipelago where it is not always easy to travel wherever you want to, or whenever you want to.
For classic destinations, it is still fairly doable. Flores is an island well served in air transportation. Labuan Bajo in the far west has regular flights with Trans Nusa and Wings. Ende also with Pelita, Trans Nusa and Wings as well. Maumere is the largest airport in Flores and can accommodate planes like the Foker 100. Ruteng and Bajawa airports are mountain airports, and more irregular. Request further information from Trans Nusa.