Poutiainen scored her first World Cup victory – and the first for a female Finnish alpine skier – on 28 February 2004 in a slalom held on home snow in Levi, Finland – the first alpine World Cup race to be held in the country. In the 2005 World Cup season, Poutiainen won the season titles in both the slalom and giant slalom, and placed fifth in the overall standings. Along the way she won three slaloms, a giant slalom and secured ten podium finishes. At the 2005 World Championships, she placed second in the giant slalom behind Anja Pärson of Sweden and second in the slalom behind Janica Kostelić of Croatia – the first alpine World Championship medals for a Finnish female.