Secret Invasion
Of course, for all White Vision is obviously capable of, he still has much to learn if he is going to become a hero. In that regard, I imagine his first course of action would be to seek as much knowledge of the outside world as possible, and beyond. So, perhaps, when he flew out of the Hex, he just kept soaring higher and higher until he hit outer space.
If this rings true, White Vision then has a good chance of bumping into Nick Fury (Samuel L. Jackson), who will soon be the lead of his own Disney+ exclusive series called Secret Invasion that once again pairs him with Talos (Ben Mendelsohn) and other Skrulls against otherworldly enemies. If you ask me, the synthezoid could not receive better superhero mentorship than from a race of shapeshifting aliens and the man responsible for putting the Avengers together.