By train from Munich to Salzburg Main Station.
Continue on the No. 150 bus (boarding area F on Südtiroler Platz) to Strobl bus station. Transfer to the WolfgangseeSchifffahrt ferry or take the No. 546 bus to the “St. Wolfgang Schafbergbahnhof” stop.
The No. 150 also stops in St. Gilgen, where you can likewise board the WolfgangseeSchifffahrt ferry (stop “St. Gilgen Busbahnhof / Raiffeisenplatz”, then ca. 340 meters on foot).