My nephew is playing in a music festival in Graz this summer. Does anyone know the simplest way to take the train to Graz, beginning at the airport (VIE)?
Catch a train at the airport rail station to Graz.
Look up your schedules and buy your tickets at the OBB website- https://www.oebb.at/en/fahrplan
We took the train from Vienna airport to Graz last fall--simple and easy. The rail station is right underneath the airport terminal.