Melbourne Airport also known as Tullamarine Airport or the local colloquialism Tulla, is the primary airport serving the city of Melbourne and the second busiest in Australia. Located 23 kilometres (14 mi) from the city centre, adjacent to the suburb of Tullamarine, it was opened in 1970 to replace the nearby Essendon Airport. Melbourne Airport is the sole international airport of the four airports serving the Melbourne metropolitan area.

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. N1 Melbourne serves as a hub for Qantas and Virgin Blue, while Jetstar Airways and Tiger Airways Australia utilise the airport as home base. Melbourne 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.