You can also text the same info to Google, and you'll get a reply with the gate and departure/arrival times for the flight. This can come in quite handy if you don't have internet access.

One caveat, though - on my most recent flight (last Thurs), flightstats gave the wrong gate and departure time for one segment. I'm assuming it was due to changed ops as a result of the weather problems, but I don't use the service enough to know whether accuracy problems are a regular occurrence.