Originally Posted by
t325
Does it account for ATC holds at the destination airport - like is it able to predict based off the time of arrival and how many other flights will be landing at the same time how long they'll have to hold until they can land? Now that would make it even more impressive than it already is.
No, it's based on the calculated flight plan - speed and distance. The captain will often say that this is the planned time, unless we need to hold for traffic, divert around weather, etc.