If yes, this app is for you. "Plane Above Me" answers that exact question.
You can scan the sky by pressing its Scan button or let the app auto-detect flights. Once it detects the sound of aircraft engines, it will retrieve live flight data for you. Behind the scenes, it uses Apple's sound classification models to achieve that.
Location data is used for scanning for flights nearby only. It is never stored and sent anywhere.
If activated, audio data is analyzed on device for aircraft sound identification only. It is never stored and sent anywhere.