what is the biggest airplane?
The Largest Airplane Ever Built. The Antonov An-225 Mriya is a cargo aircraft that was designed by the Soviet Unionâs Antonov Design Bureau in the 1980s. It is powered by six turbofan engines and is the longest and heaviest airplane ever built, with a maximum takeoff weight of 640 tonnes. It also has the largest wingspan of any aircraft in operational service. Only one An-225 was ever built and the behemoth transporter is still in service today.