Real Time Flight Status
Google's flight stats search feature now delivers real time status and information in the search result OneBox. Just type the name of the airline and flight number (e.g. American 123, ua226) into the search box and you shall see something like this:
The information is provided by FlightStats.com which uses data feeds from the US Federal Aviation Administration's (FAA) Aircraft Situation Display to Industry (ASDI). I have tested it with some flights departing from Hong Kong and it works fine so I guess it is available for all international flights.