This is the mobile site of CheapTickets.com, a major online travel agency. You can't book flights on the mobile page but you can view current flight arrival and departures and flight schedules and you used to be able to track flights in real time. These features work for most airlines. You can also view the itinerary of trips you booked on CheapTickets.com
As of August, 2006 the flight tracker seems to be broken!
31-Oct-2010 - Cheaptickets.com no longer has a mobile site.