A good one for the BB could be wap.wsbtv.com. It is local Atlanta news but it has an awesome, and quick, flight tracker. Just remember to not put a space between the airline code and the flight #.
Let me know how this works on the BB as I have only used the flight tracker on the iPhone.
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Who's that peekin' in my window?...POW....nobody now.
The beyond411 flight plugin has not worked recently, only returns the next day's scheduled flights, not the current day. i like that plugin, I hope it work again.