Virgin Australia has short sale rates to LA. The sale is valid until 20 September 2013. 

Return direct flights economy ex Sydney, Melbourne and Brisbane:
Travel from 15 Sep 13 – 09 Dec 13 & 01 Feb 14 – 31 Mar 14 prices from $209* online
Travel from 17 Jan 14 – 31 Jan 14 & 01 Apr 14 – 16 Jun 14 prices from $349* online

Return direct flights premium economy ex Sydney, Melbourne and Brisbane:
Travel from 15 Sep 13 – 09 Dec 13 & 01 Feb 14 – 31 Mar 14 prices from $1399* online
Travel from 17 Jan 14 – 31 Jan 14 & 01 Apr 14 – 16 Jun 14 prices from $1499* online

* Conditions Apply. Taxes are additional, approx $840* – $880* pp

Return taxes correct as at 09 Sep 13:
Departing Sydney: $850*
Departing Brisbane: $859*
Departing Melbourne: $849*

Click here to find out more. 

BA_VIRG