This a sign of the times. Instead of scheduling a flight on an airline, showing up two hours early and wading through the mess of an airport. now you can catch the flight at a fixed base operator (FBO) i.e., private hangar and just step on board.
Sure, you say, anyone with a billion dollars can fly in a private jet. But in this case the flights are only $500 to $1200. There are limitations though, read the article to find out what they are.