Six Flags America Home Six Flags Six Flags America Your experiences Sign in to track your experiences. Jul 15, 1974 Six Flags America Resort Opened Opened Jul 15, 1974 · Closed Nov 2, 2025 Six Flags America Theme Park Opened 1982 · Closed Sep 6, 2025 Paradise Island Water Park Nov 2, 2025 Six Flags America Resort Closed