United Airlines (UA, Chicago O'Hare) is evaluating A321neo(LR), A330-800, and A330-900 types as possible replacements for its fleet of ageing B757 and B767 Family jets, Flightglobal has reported.

Airbus has reportedly provided the American carrier with tailored specifications for both the narrow- and widebody new generation types. United will most likely choose between these types and B737 MAX 10, B787-8, and the proposed Middle-Of-Market (MOM) Boeing jets.

The manufacturer has pitched a 178-seat configuration for the A321neo(LR), 252-seat for the A330-800, and 303-seat for the A330-900.

The aircraft slated for impending replacement include a total of fifty-six B757-200, of which fifteen are configured for transcontinental services while the remainder is deployed on transatlantic services. The aircraft are on average 22.2 years of age.

According to the ch-aviation fleets module, United also operates twenty-one B757-300s, thirty-five B767-300(ER)s (with a further three ex-Hawaiian Airlines (HA, Honolulu) units of the type joining the fleet shortly), and sixteen B767-400(ER)s. The subfleets are on average 15.9, 22.9, and 16.8-year-old, respectively.

United is likely to select more than one type to replace the outgoing B757s and B767s.

The carrier currently has forty-five A350-900s on order with the manufacturer, its maiden widebody Airbus jets. It also expects the delivery of 100 B737 MAX 10s, thirty B737 MAX 8s, fourteen B787-10s, as well as a single B777-300(ER).