The airline said there had been a strong response to the offer, which allows a second passenger to fly for the cost of taxes and charges, reports The Australian.
September traffic figures revealed a 9.3 per cent fall in Qantas mainline international passenger numbers. The Association for Asia-Pacific Airlines also warned over the weekend that the global economic crisis had seriously affected passenger demand and the industry was facing "severe turbulence".
Incoming Qantas chief executive Alan Joyce said that the September figures indicated a weakness in traffic.