48 Hour Sale to New Zealand. Last day of sale: 1 May 2012.
From AU to: Auckland, Wellington, Rotorua, Hamilton from $139
Dunedin from $149, Queenstown from $179
Return flights from NZ to AU are even cheaper!
Various flight dates. Check on-line:
http://www.airnewzealand.com.au/special-deals-new-zealand
Holy crap! $139 to Auckland and $99 from there back to Sydney in July! That's return flights for less than $240.