Revealed: United Airlines Airbus A321XLRs Will Have 150 Seats & New Polaris Business Class … Cabin Configuration United Airlines’ Airbus A321XLRs will feature a three … business class on the Airbus A321XLR, reflecting the growing … enhanced services. The new Airbus A321XLR will feature a … American Airlines still has 49 Airbus A321XLRs on order. American …