If you want to go to dieng from yogyakarta:
- from jogja to wonosobo bus station using door-to-door minibus (usually called travel)
- wonosobo bus station to dieng using minibus
I think that is the simple way to get to dieng from jogja, apart from renting a car with/without driver.
are you planning to go to dieng via jogja?..
Rahayu Travel, Yogyakarta office : Jl.P Diponegoro 27 Phone: +62 274 587080. Wonosobo office : +62 286 321217
this is one of the door-to-door minivan from jogja to wonosobo. The schedule is twice a day but I don't know about the exact time.
Jogja office is located near tugu.