Traveling with kids is downright stressful for parents, but young ones who experience flight anxiety can add another layer of dread for mom and dad — not to mention other passengers. Travel anxiety and fear of flying are very common in children, Dr. Katie Hurley, vice president of community initiatives at The Jed Foundation (JED) , explained to The Post. “While some kids may feel excited — especially if they’re heading somewhere they’ve been looking forward to — travel can be overwhelming,