Deliberate mistake: The version of Earth that our main characters spend the story trapped in, is one individual second in the past that is identical to Earth in every way, with the only exceptions being there is no life or power. The Langoliers consume all the land in this one second and the remnants fall into a huge abyss. However, if this were like Earth, there should be thousands upon thousands of miles of soil beneath the land, but this is ignored for the sake of the plot.
Suggested correction: It is assumed that the Langoliers ate everything below that point to the Earth's core too.
Deliberate mistake: The surviving passengers are all awoken from a deep sleep after Dinah realises the other passengers have gone. Yet none of them appear drowsy or tired and none of their eyes appear strained, despite having just woken up so suddenly. (00:09:20)