These services attracted business travelers willing to pay a premium for overnight comfort, direct schedules, and a cabin that rivaled international business class. A Narrowbody That Delivers A Widebody ExperienceCredit: ShutterstockUnited's premium 757 operation traces its roots to an unusual competitive environment. Rather than merely replacing an aging fleet, United has used the opportunity to redefine its premium narrowbody product. Related Why United Airlines Doesn't Want Its Airbus A320s Anymore United is retiring its aging Airbus A320s in favor of fuel-efficient A321neos, boosting capacity, cutting costs, and modernizing passenger experience. United built its reputation for premium narrowbody flying on the versatility of the 757.