Instagram/Willie Nelson & Avett Bro Music Willie Nelson's Outlaw Music Festival returns summer 2026 for 12 special shows. See Willie & iconic guests on a limited cross-country tour. March 25, 2026 AceShowbiz - The Willie Nelson Outlaw Music Festival is set to return for the summer of 2026, bringing a lineup of acclaimed artists to amphitheaters across the United States. Although this year's tour is shorter than previous years, it still promises memorable performances with a mix of iconic and emerging musicians.