Images. A380-800 aircraft developed by Airbus is the largest aircraft in the world. The first Boeing 777-300 aircraft was delivered in May 1998. Boeing 747-400 is the most popular aircraft in the Boeing 747 family.he Boeing 777-200 with a maximum seating capacity of 440 is currently the sixth biggest passenger aircraft in the world. It offers 305 and 400 seats respectively in the three-class and two-class configurations.