Boyd remained at Burnley for the 2015–16 season back in the Championship, starting in the opening day 1–1 draw away at Leeds United. He scored once during the first half of the season, netting the winning goal in a 2–1 home victory against Milton Keynes Dons on 15 September 2015, a win that helped Burnley secure their fourth successive league victory. Boyd's second goal of the campaign came in the reverse fixture at Milton Keynes Dons on 12 January 2016; his goal, Burnley's fifth, rounding off an emphatic 5–0 victory in what was Burnley's biggest win of the season. Three days later, Boyd scored courtesy of a 20-yard volley in another away win, this time a 3–1 victory over Brentford at Griffin Park. Boyd's first-half strike in Burnley's 2–1 away win at Birmingham City on 16 April 2016 helped move them to within two points of the top of the Championship. Burnley would go on to win the Championship title after securing a 3–0 away win at already relegated Charlton Athletic on the final day of the season, with Boyd scoring the second goal of the match when he "smashed the ball home from eight yards" shortly after half-time. He was almost ever-present during the campaign, playing 47 times and scoring five goals as Burnley returned to the Premier League at the first time of asking.