Milos National Airport (MLO) is less than 5 km from the port of Adamas, southeast of Milos Bay, the "inner sea" of the island. It's a very small airport, which is only served from Athens and, in high season, from Thessaloniki. Its runway is only 3,380 ft long.
Three airlines serve Milos: Olympic Air and Sky Express from Athens, Astra Airlines from Thessaloniki.