The 21-year-old received his punishment at a Football Association disciplinary hearing on Thursday having pleaded guilty to the misconduct charge brought against him after United's 3-2 victory over Carlisle on April 12.
The FA was forced to wait until the conclusion of that investigation before taking action against Huntington, and he was eventually charged with breaching FA Rule E3 on October 20, six months after Carlisle's visit to Elland Road.
The three-match ban meted out by the governing body is suspended until May 31, 2010 and the FA has the right to activate the ban if Huntington is found guilty of a similar offence before that date.