American AAdvantage members who fly between the U.S. and Australia on a Qantas Airways codeshare flight can earn up to 20,000 bonus miles for roundtrip travel through Aug. 31, 2012.

Register at http://insideflyerus.wpengine.com/link/?6446 using promotion code QF20K and fly roundtrip on a nonstop Qantas-operated flight on published fares (excluding fares beginning with N or Q). Registration prior to travel is required. Members can earn 5,000 miles on coach fares, 10,000 miles in premium coach, 15,000 miles in business class and 20,000 miles in first class.