A new plane is changing how airlines think about long-haul flights. Here's everywhere you can fly on the Airbus A321XLR.

Guetst touring a United Airlines Airbus A321XLR at an August unveiling event. Michael Nagle/Bloomberg via Getty Images The Airbus A321XLR has helped unlock new destinations for airlines, especially transatlantic ones. United Airlines and American Airlines announced a host of new routes that are now open for booking. Here's everywhere you can book to fly on the XLR. The world's newest airplane has changed the game by opening new routes to dozens of international destinations. The Airbus…