Home Slickdeals Chicago to Sydney Australia $459-$482 RT Airfares on American, United or Qantas... Slickdeals Chicago to Sydney Australia $459-$482 RT Airfares on American, United or Qantas (Travel Aug-Oct 2019) By ARCOM - 9 February 2019 142 0 SHARE Facebook Twitter Go to the deal page: Chicago to Sydney Australia $459-$482 RT Airfares on American, United or Qantas (Travel Aug-Oct 2019)