Harris began his season on the Challenger Series, placing 10th at the 2015 CS Nebelhorn Trophy and 6th at the 2015 CS Ice Challenge, before finishing 4th at the NRW Trophy. In December, he won his second national title. He reached the final segment at two ISU Championships – the 2016 European Championships in Bratislava, where he finished 18th, and the 2016 World Championships in Boston, where he ranked 22nd.