Originally Posted by mahasamatman
I believe the cutoff is once the flight goes to airport control, though I'm not positive on that.
Do flights routinely "go to airport control"
x number of hours before schedule departure? And what exactly does "go to airport control" mean? Are there different windows of time for the sale of seats to "go to airport control" and the assignment of seats to "go to airport control"? Are there practical considerations that dictate when that happens with sales and seat assignments?