AA has a sale from 8 - 14 July 2014. The sale is for flights 10 February 2014 to 5 August 2014.
DRW to DPS $145
DPS to DRW $77
PER to DPS $145
DPS to PER $79
There are also flights via KUL to DPS:
OOL to DPS $239
MEL to DPS $239
SYD to DPS $239
If you need a flight out to buy a 60 day Turis Visa, there are various $8.00 flights from Bandung and Jakarta to Singapore for $8.00. From Medan you can fly to KL or Penang for $8.00.
For the really stingy, there are flights from Surabaya to Makassar for $1.00!
The above prices do not include insurance, checked in luggage, meals, drinks or credit card fees.