United is debuting an ultra-premium long-haul Airbus jet. It has sliding doors and a walk-up snack bar — see inside.

The new A321XLR will have doors but they can't be used until certified by the FAA. United Airlines United Airlines will debut its highly anticipated Airbus A321XLR this summer. The specially-designed long-haul plane is expected to replace Boeing 757 routes. It has doors and beds in business class and a snack bar in economy. United Airlines is set to roll out its newest long-haul plane — and it's billing it as ultra-premium. The highly anticipated Airbus A321XLR — a specially designed extra-...