The closest commercial airport is Marco Polo Airport on the mainland near Mestre (a more typical Italian city, without Venice's unique structure). There is a city bus and a shuttle bus from Marco Polo to Piazzale Roma. See the details in the "By bus" section below. And there are Alilaguna water-buscosts €15 for a 75 minute boat trip. Murano costs €8 and takes only half an hour.