How premium leisure travel is rewriting airline economics

Window or aisle? These days, if you're at the front of the plane, you don't have to choose: "Everything is about having direct aisle access from every seat," says Steve Saxon , coleader of McKinsey's Travel, Logistics & Infrastructure Practice. And that's just one of the many ways airlines are reinventing the premium experience for a burgeoning customer segment: the affluent vacationers now…