To check your United Airlines flight status with a confirmation number, simply visit the official United Airlines website and go to the "My Trips" section. Enter your confirmation number along with your last name to view real-time details about your flight. This will show your departure and arrival times, gate information, and any delays or changes. You can also use the United Airlines mobile app for the same purpose. It’s a quick and easy way to stay updated on your travel plans. Make sure to have your confirmation number handy for the most accurate results.