No buses serve the airport. Taxis to Adamas cost about €13, plus a token extra charge for bags.
Milos Buses handily places updated timetable info on its website. Frequency of service varies with season, but in July and August buses leave Adamas for Plaka and Trypiti about every hour. Buses run to Pollonia every two hours, hourly to Paleohori and to Achivadolimni (Milos) Camping. Most fares are €1.80.
Taxis from the taxi station on Adamas’ main square to Plaka are about €8, and to Pollonia €15; add €1 from the port.