Air Asia Indonesia is due to commence daily flights from Perth to Bali from 17 July 2009.
Before these flights have commenced, Air Asia Indonesia has now announced that from 19 August 2009, the frequency of flights will increase from one a day to two a day. See:
http://www.impactpub.com.au/micebtn/index.php?option=com_content&task=view&id=4562&Itemid=50
Last month, I managed to book a flight with them for $A77 (including taxes) in September, leaving Perth at 4.50 am.
The additional flights are priced from $A99 (including taxes).
I checked their booking engine but their new flights are yet to show up. I would hope that the new flights departure time is more passenger friendly than 4.50 am!