On August 1, 2012, it was reported that prosecutors had struck a deal with the defense in which Aron would plead guilty in exchange for a sentence of at least 40 years to life in prison. The Kletzky family supported this decision, wanting to avoid reliving the murder if the case went to trial. On August 9, 2012, Aron changed his plea to guilty of one charge of second-degree murder and one charge of second-degree kidnapping at Brooklyn Supreme Court. He answered a series of questions from the judge in which he admitted to killing Leiby Kletzky. On August 29, 2012, Judge Neil Firetog sentenced Aron to 25 years to life on the second-degree murder charge and 15 years to life on the second-degree kidnapping charge. According to the Department of Corrections and Community Supervision's inmate lookup website, he will be eligible for parole on May 18, 2049.
