Does anyone know how late can i go into six flags for fright fest?

Closes at 1 a.m. however I recommend you get the express pass the lines are very long

Be the before 7 to line up unless you buy the front of line pad, then you can go whenever you want.

The park closes at 1am for fright fest, so if you want to actually do any of the mazes or anything you'll want to go in at least a few hours before then.