Supposed to be a Boeing 767, but a Boeing 737 and a Lockheed L-1011 Tristar were also used for various scenes.
The entire plot of this film is implausible. Prisoners are normally transported on unmarked aircraft operated by the Justice Prisoner and Alien Transportation System (also known as "Con Air"), not civilian passenger flights. Such aircraft are also normally handled at military airports, not commercial ones. Furthermore, flight schedules and manifests are confidential, kept away from public view and known only to those directly involved in the operation. All of the aforementioned factors exist specifically for the purposes of deterring escapes or sabotage, and preventing harm to bystanders.
In numerous scenes both pilots handled the aircraft in an outrageously unrealistic manner, both in turbulence and smooth air conditions. Their movements of the control column were severely exaggerated and erratic, creating what is known as over controlling. During all of these scenes neither pilot was looking at their instruments or directly through the front screen, meaning that they had no reference to an artificial or natural horizon. This would have undoubtedly resulted in their total inability to safely control the aircraft. Also, at most times whilst flying the aircraft they both spent most of their time looking at each other and laughing, again totally distracting from what should have been their primary task, controlling the aircraft with reference to the instruments or the outside horizon.
The pilot's wardrobe is off. Neither have a shoulder bar showing their rank and Showman (James Brolin) is wearing a jacket the entire flight. Most pilots would not wear their jacket during flight.