Here is some information about Geraldton Airport from Wikipedia:
Geraldton Airport (IATA: GET) is located 10 kilometres (6 mi) east of Geraldton, Western Australia, along the Geraldton-Mount Magnet Road. Approximately 60,000 passengers use the airport annually.
Geraldton Airport is the general aviation and regular passenger transport airport for the City of Geraldton-Greenough and it meets varying transport, industrial and commercial interests across the mid-west region.
The airport is the main regional base for aircraft charter operations, flight training, private flying, aerial and agricultural work and aircraft maintenance in the mid-west region.
It has daily Regular Public Transport (RPT) services, Geraldton – Perth – Geraldton, provided by Skywest Airlines using Fokker 50 aircraft.
Here is the main Airline that services Geraldton Airport: