Download the Flightradar24 app. Open it up and click the location tracking arrow to move the map to your current location. You should see a plane (or many depending on your location).

To identify exactly what plane just flew over your house, the most effective tool is a live flight tracking app like Flightradar24, ADS-B Exchange, or FlightAware. These apps use a global network of receivers to track the ADS-B transponders that most modern aircraft are required to carry. By opening the app and looking at your current location on the map, you can tap on the aircraft icon to see the airline, flight number, aircraft type (e.g., Boeing 737 or Airbus A320), altitude, speed, and even its origin and destination. If the plane was a military aircraft or a private jet that doesn't appear on commercial apps, ADS-B Exchange is often better as it does not filter out non-commercial traffic. For a more "high-tech" experience, Flightradar24 has an Augmented Reality (AR) mode where you can simply point your phone's camera at the plane in the sky, and it will overlay the flight details directly on your screen. These tools provide real-time data that is incredibly accurate, allowing you to satisfy your curiosity about the "giant silver bird" passing overhead in seconds.