You can find out about current flights between major cities within the United States. Remember that this is real time flight data so it only shows flights that are flying, have recently flown, or are about to take off.  Great for kids to follow.  Visually shows map where your flight is, along with the airplanes speed, altitude, and direction. 

Want to let family, friends or associates know when your flight will land? Using real-time flight data, this site can notify up to three people for you via e-mail.