According to DeWent's father, Marshals located DeWent with 26-year-old Robert Butler in Fort Smith.
The family is on their way to the airport to be reunited with their daughter.
Her mother, Jessica DeWent, says Lacey is doing OK and was not harmed.
Daniel DeWent also said authorities took Butler into custody. DeWent and Butler met online and tried to form a relationship, but he was arrested for being in contact with her.
The teen was last seen on March 31 leaving for school. When she never showed up, her parents contacted police. An Amber Alert was issued for DeWent on April 1.