Originally Posted by
cre95
We’ll need to wait for the OP to come back and explain. Given the option provided for having to come back the following day, my interpretation is that “they arrived too late at the airport and thus missed the flight.” It could have been too late to meet the check-in window timing requirements or totally missing the flight.
My interpretation would be more: Delta somehow
arbitrarily decided, unless it is a rule somewhere in their policy, to not let an unaccompanied minor board a flight because it would land at a time deemed too late for a minor to be in an airport, unaccompanied.