Qantas is selling economy-class, round-trip tickets from Hong Kong to Sydney, Perth and Cairns for a reasonable $3,440 - but you'll have to book your flights by August 26. For $3,940 you can also choose from Adelaide, Brisbane, the Gold Coast and Melbourne, and round-trip domestic flights to a number of cities are on sale for $880 on top of the above prices. Outbound flights must be taken by December 31, but tickets will remain valid for the return trip for a year from the date of departure. For details and reservations call Qantas on 2822 9000, or contact your travel agent.