Fleming first played hurling at club level with
St Senan's. He won a
Kilkenny JHC medal in 1956 following a 6-09 to 4-06 defeat of St Finbarr's, Castleinch in the final. At inter-county level, Fleming first played for
Kilkenny as a member of the junior team. He won a
Leinster JHC medal before later lining out in Kilkenny's 5-02 to 2-08 defeat of
London in the
1956 All-Ireland junior final. Fleming made his
senior team debut in a
National Hurling League game against
Waterford in March 1956. He was later dropped from the team but recalled in October 1957 and won back-to-back
Leinster SHC medals in 1958 and 1959. Fleming lined out at centre-forward when Kilkenny were beaten by Waterford in the
1959 All-Ireland final replay. ==Death==