Hi, don't know if these are any good for you but worth a look. Some offer discounted confirmed space on airlines for industry employees and partners.
www.gozed.com
www.wotif.com
www.worldinterline.com.au
www.tidd.com.au
www.interlineres.com
www.iddeals.com
www.travelclub.com.au
Good luck and please let me know how you get on, all this info is vital for us thrifty travellers!!