In the beginning of the year Thomas was selected to compete at the Tokyo World Cup, where she won silver behind Mai Murakami of Japan. In April she announced her commitment to the University of Florida and their gymnastics team. In August Thomas competed at the 2018 U.S. National Gymnastics Championships where she placed eighth in the all-around, fourth on bars, and sixth on beam and floor, and was once again named to the senior national team. On August 20, 2018 Thomas was named to the team to compete at the Pan American Championships alongside Grace McCallum, Jade Carey, Kara Eaker, and Shilese Jones. There she won gold in the team final and silver in the all-around and on uneven bars. Thomas was invited to attend the Worlds Team Selection Camp but declined.