Source: https://www.youtube.com/watch?v=MNsbPU06-aE
Short version:
- Go to FlightAware.com
- Enter the flight number
- Scroll down and select the day of of the flight
- Under "Flight Details" on the right, click "View Track log"
- Click the Google Earth button to download the file
- https://www.metabunk.org/sitrec/?sitch=nightsky
- When the globe has loaded, drag in the downloaded KML file
- Click "Sync Start Time to Track" (or set the time manually)
- Change "Camera Motion" to "KML Track"
- Adjust time, and camera heading