I’m just about to pick up my niece from Gatwick shortly.
Rather than trust the airport to give me correct/incorrect arrival time, I use a very nifty little programme called flightradar24. This allows me to track the progress of a flight in real time.
For instance at this moment her flight is at 38,000 ft and travelling at 442 kts, and on a course off 332 deg.
When it gets to Paris I shall jump into the car and head to the airport.
Just thought you might be interested.