This service works in both directions. Some travellers land early, before the hotel room is ready, and use the time to see the city on the way in. Others fly late in the evening, after check-out, and take the ride on the way to the airport. Either way, the transfer stops being lost time.
The service is two hours in total from the confirmed meeting point. That time covers the meeting at the airport, the journey between the airport and the city, and the city-highlights ride of about one hour. How the two hours divide depends on the flight, the luggage and the traffic on the day.
You may begin at the airport arrivals terminal, at a railway station, or at your hotel on the day of departure. The ride may finish at your hotel, at another agreed Prague address, at a station or at the airport. The final sequence is confirmed before the ride so that it works with flight timing, luggage and the onward plan.