At the end of the film when Bruno is about to board the plane, he hugs multiple people over the shoulder. When the camera cuts to a different angle, he is seen hugging under the shoulder during what is supposed to be the same hug.
When Helen is trying to teach Bruno how to fight, he hits her with a right hook to left of her face. However, in the next scene, she has a shiner on her right cheek.
Shot of an airplane departing for Rome is an MD-80, narrowbody twin-engine jet. These aircraft are not used for transatlantic flights.