United Airlines is one of the world’s largest airlines in terms of fleet size, annual revenue, and passengers carried. The airline operates a fleet of 1,015 aircraft, with a diverse combination of narrowbody and widebody aircraft. The United fleet has an average age of 15.9 years. The airline has 225 widebody jets, all Boeing-manufactured, across three major types: the Boeing 767, Boeing 777, and Boeing 787 Dreamliner. Of those, 96 are Boeing 777 airliners.