L I G H T N I N G
Even if he didn't, I think he'd still get away. I was surprised at how long it took for Amaterasu to catch Sasuke. Minato should have enough time to simply pitch a kunai in another direction.Unless Minato is constantly teleporting, then it's possible. But he'll have to have it set up beforehand. If not and Itachi gets a chance to focus on him, he just may catch him.