Flight notifications

FYI
If you have friends/relatives flying in you can have notifications sent to by email of flight status with Delta. I am not sure about other carriers but on Delta's website http://www.delta.com/home/index.jsp you click on Flight Notifications and enter the city, flight number, your email address. This is a convenient way to know if they will arrive on time or not.
(It does not, however, let you know if your son missed his flight!)