Hanad Mustafe Musse, 19, pleaded guilty to one count of conspiracy to provide material support to a foreign terrorist organization. Other counts against him will be dismissed.
"I have committed a terrorist act and I'm guilty of it, your honor," Musse told the judge. Musse faces a maximum of 15 years in prison when he is sentenced by US District Judge Michael Davis. A sentencing date has not been set.
Prosecutors allege Musse and some of his co-defendants took a bus to New York City last November and tried to board flights overseas, with plans to go to Syria. They were part of a larger group that conspired to join the terrorist group.
US Attorney Andy Luger, who was in court for the plea hearing, said in a statement: "The facts set forth in Mr. Musse's guilty plea underscore the length and breadth of this criminal conspiracy. This defendant made multiple attempts to leave Minnesota to join ISIL - criminal prosecution was the best remaining option to stop him and potentially save his life."