My friend was saying I should stop using unofficial apps or sites to track flights as they could be wrong but don't the official site and the numerous flight tracking sites get the tracking info from the same place? In a tracking app I was looking closely at on my phone… It said due to a FAA required delay the times in the app could be up to 15 minutes late. Is that how it usually is? Well 15 min behind is really not useful when you're late running through an airport. What I want to know is whether the extra time to go and check on an "official" site is worth it or is it all the same tracking info everywhere?
EDIT: Side question if it's okay: the flight boards within an airport are runnng on their own internal system right? So like their info would he accurate to the minute and beat all other website trackers