Here is some information about Tullamarine Airport from Wikipedia:
Melbourne Airport (IATA: MEL), also known as Tullamarine Airport, is serving the city of Melbourne and the second busiest in Australia. The airport was opened in 1970 to replace the nearby Essendon Airport. It is the sole international airport of the four airports serving the Melbourne metropolitan area.
Melbourne Airport is 23 kilometres (14 mi) from the city centre. The site of the airport is considered its own suburb—Melbourne Airport, Victoria (postcode 3045). This is adjacent to the suburb of Tullamarine.
The Melbourne—Sydney air route is the third most-travelled passenger air route in the world and the second busiest in the Asia Pacific region.The airport features direct flights to destinations in all states and territories of Australia in addition to numerous destinations in Oceania, Asia, Africa, Europe and North America. Melbourne is the most common destination for the airports of five of Australia's seven capital cities.
It is the busiest airport for international export freight as of December 2008, while second busiest for import freight. Domestically, Melbourne serves as headquarters for Australian air Express and Toll Priority and handles more domestic freight than any other airport in the nation.
In 2003, Melbourne received the International Air Transport Association Eagle Award for service and two National Tourism Awards for tourism services. Skytrax, an airline consultancy company, classifies Melbourne as a four-star airport. The airport comprises four terminals: one international terminal, two domestic terminals and one budget domestic terminal.
Here are some of the major Airlines that service Tullamarine Airport: