Google lets you track the status of any U.S. flight and many international flights. All you have to do is enter the flight number into the Google search box. For example, to find out the status of United Airlines flight 116, enter ua116.
On this particular day the result was:
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Google now displays links to three sites that let you track the flight status—Travelocity, Expedia, and fboweb. Click one of these links to view real-time flight status—including maps of where the plane is in its route.