you get on with the game then go back to the valley windworks and you should find a driftloon just standing by the wind turbinds out of the grass.
hope i helped.
PS this is just how i found it so if it is not there sorry.......anyway i do have diamond just i gave to my brother but i found the driftloon how i just told you on Pokemon platinum.
GOODLUCK!
Driftloon will be outside the Valley Windworks on Fridays.
You can see a Driftloon at the Valley Windworks on Fridays in the morning. You can also battle Driftloon at the Hearthome Gym. The people there will have Driftloon.
you need to go to valley windworks on a Friday on your DS it will be there all day
Driftloon can be seen outside Valley Windworks on Fridays.
You can find it only on fridays at Valley Windworks.
On fridays outside of valley windworks.
On fridays it will be outside the valley windworks
Driftloon is outside the Valley Windworks on Fridays.
the ballon Pokemon is driftloon if you want it you have to visit valley windworks on Friday
In the gym in heathome one of the people in one of the rooms has one but if you want to catch one go to valley windworks on a Friday
you need to go to valley windworks on a Friday on your DS it will be there all day
you can get a Drifloon in Pearl on Fridays near the Windmills in Valley Windworks near Floaroma Town