FlightInfoApps makes a good one, in the App Store or Google Play... just like looking at an airport monitor. Not sure why someone said You don't need one, it has been awesome for me sitting there in the QUE knowing there are 90 flights coming in, or also knowing that only 15 are coming and the rest are delayed or cancelled because of some storm in Cleveland.... obviously I am more optimistic about getting a PAX when there are 90 flights coming in....