Stephens competed as a member of Canada Ontario at the 2014 World U-17 Hockey Challenge. He was also invited to compete with the Canada men's national under-18 ice hockey team at the 2014 Ivan Hlinka Memorial Tournament where he helped Team Canada win gold. In April 2015, he captained the Canada men's national under-18 ice hockey team to a bronze medal as the 2015 IIHF World U18 Championships.