Hakkoda Ropeway is also accessible by JR bus
from Aomori train station (60 minutes)

*If you are a non-Japanese citizen on a tourist visa and are coming up from Tokyo to Hakkoda,
you should look into getting a JR PASS to get a discount on the bullet train (shinkansen).
See: http://www.japan-guide.com/e/e2361_02.html