To find the return flight distance between Vienna to Salzburg via Melk, Dürnstein/Wachau Parkplatz Ost, start with entering the locations in the control and click on Return Flight Distance. You can also add multiple destinations in between while returning from a location. If you are not aware of the routes, you can check the
Vienna to Melk Route via Melk, Dürnstein/Wachau Parkplatz Ost.