Maflin lost in the first round of the International Championship and UK Championship 6–2 to Jamie Jones and 6–3 to Sean O'Sullivan respectively. His first win at the venue stage of a ranking event this season came at the German Masters courtesy of overcoming Marco Fu 5–1 and then lost 5–3 to Luca Brecel. After knocking out Hammad Miah and Leo Fernandez, Maflin lost 4–2 to home favourite Mark Williams at the Welsh Open. He made it through to the final round of World Championship qualifying and was defeated 10–7 by Robert Milkins.