Cathay Pacific Airways sold first and business class tickets for as cheaply as it would cost to fly in economy, in what appears to have been an error by the airline. The offer lit up the internet in the new year with frequent fliers and bargain hunters alike buying tickets quickly as word spread across social media and popular flight blogging websites and forums. The carrier offered return business and first class seats from Vietnam to North America at the very low prices of HK$5,300 (US$678) and HK$6,600 respectively. The airfares have since been withdrawn from its website. Attention has turned to whether Cathay will honour the tickets, which typically sell for HK$35,000 in business or HK$55,000 in first class for a return flight. Cathay said it would address the airfare situation Wednesday. <br/>