Mr Reagan and three others were injured in the shooting outside a hotel in Washington in March 1981.
Mr Hinckley was found not guilty by reason of insanity but was sent for treatment to a Washington hospital.
In July, a judge ruled that Mr Hinckley, now 61, was not a danger to himself or the public.
Mr Hinckley had already been spending 17 days a month at his mother`s home in Virginia under strict conditions.
Associated Press reported that he had arrived at her home having been freed on Saturday.
John Hinckley Jr, Reagan`s would-be assassin, released after 35 years
11 September 2016
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John Hinckley Jr, the man who tried to assassinate US President Ronald Reagan, has been released from a psychiatric hospital after 35 years.
