Why? Can't you get into the plane!

[Krallu]

Hi there!

I do wonder. If you say that an airline are closing the check in 30 minutes before departure. And then people coming too late are not getting in. The time is of course different with different airlines.

But why are you not allowed to get in after last check in time? The plane is still standing there, why can't you get on board?

And why and to what do the airline need the 30 minutes before departure? Why do the people need to be checked in 30 minutes before? There must be a reason why you can't change the number of passengers 30 min before dep.??

Thanks!