Treviso has its own small airport (TSF), used heavily by Ryanair as a budget alternative to Venice. A shuttle bus runs from the terminal to Venice Mestre, but most travellers heading into Treviso itself take the local bus or a taxi for the 3-kilometre ride into town.
By train, Treviso Centrale is on the main line from Venice (about 30 minutes) and Udine, with regular regional services. The station sits a short walk south of the historic centre, just outside the medieval walls.