One lap child is one thing... twins on laps, that's something else. Have one more? No worries, just put him on your 3 year old's lap... Wait, what? Yeah that's what US Airways said, and everybody ended up off the plane when it was all said and done. http://abclocal.go.com/wls/story?section=news/local&id=8475600 Indeed, when you check the main US Airways page, your options are Adults and Children (2-14). It's not until you do the advanced search (under Book Travel --> Flights) that you see the option for infants in seat/lap. Still, I can't believe that anybody would think it a good idea to have a 3 year old hold a baby in their lap for a flight... that just doesn't make much sense to me.