While some of these movies are out and out based on some sort of plane accident, crash or a trauma, bomb scare etc., the others have aeroplanes that are simply a part of the larger plot.
The most important factor, though, is essentially the performances and the amount of scare that is visibly evident on the faces of the actors involved.
When it comes to movies made about aeroplanes, in or around them, a lot of factors kick in, like the scientific accuracy, the production design, the cinematography, the correct fitment in the storyline etc.