I’m not sure you can actually do it. While I am sure you could redirect from within a lightbox, I am thinking that would keep the lightbox open.
When the lightbox closes, it should return you back to the point where you initially called the lightbox to open, in your code.
Once the lightbox closes, you could then definitely jump to a specific page. You would need to pass data from the lightbox back to the calling function, so you would have your information from the lightbox. You would probably need this in order to figure out what page to jump to.