Familiar tourists who have studied the roads and found the best way to the resort say that the most comfortable way to get there is to book a transfer. You can order it here. If you want to get a deeper insight into the Austrian mentality and take public transportation, you're welcome to do so.
The desired resort is 116 km away from the airport building, so the journey will take 2 to 3 hours. First you need to get to Cel am See. You can take the train or bus, as you prefer. You will need bus number 260. Already in Zell am See change to bus 680. You can check the bus schedule now to plan your time. You can find the schedule here.
