Paganini began the season with a sixth-place at the 2019 CS Autumn Classic International. At her first Grand Prix, the 2019 Skate Canada International, she placed ninth. She was seventh at the 2019 Rostelecom Cup. In December, she won her third straight Swiss national title and was named to the Swiss team for the European Championships. In January, she placed fourth at the championships. She was also named to the Swiss 2020 Worlds team, but the competition was canceled due to the coronavirus pandemic.