Plot hole: There's no way nobody could have heard the ruckus when John brutally slams the guy and knocks him out with his elbow on the plane, especially the people sitting right in front of him. (00:22:15)
Suggested correction: You are making an assumption. The plane was taxiing; there is a lot of ruckus. As for the people in front of him, one was reading and the other sleeping, so quite distracted. The sound could have been some luggage falling.





