O'Hare Flight Status
O'Hare flight status information is not difficult to come by, but it's not always accurate. The FAA tracks all flights, and they also give general flight information for the airport. They can tell you for example if the general airport conditions are good or bad. They might say for example that, "No destination-specific delays are being reported." Or "Traffic is experiencing gate hold and taxi delays lasting 15 minutes or less." Another example is, "Arrival traffic is experiencing airborne delays of 15 minutes or less." But this is not flight-specific information. For that they recommend you check with your airline for the most accurate information.
Chicago O'Hare Airport's official website also has a flight tracker where you can input your airline, city flight number and more, but they claim the information is not particularly accurate and that it's best to contact your airline for real-time and accurate information for your O'Hare flight status.