The most important thing to factor into anything related to booking a place at an airport parking facility, be it a really busy place like the Heathrow airport parking facilities, or the not so (relatively) busy places like Liverpool airport parking, is time. If you don’t factor in the exact time of your arrival, departure and time away, then booking a slot at an airport parking place can be pretty difficult. It’s not as hard as it sounds, all you have to do is know when you’re arriving at the car park, how long you’re away, and when you’re going to leave. But one thing you really do have to be careful about is making sure that you give yourself enough time to get to and from the car park so that you don’t miss your plane. Find out how far the terminal is away from the car parking centre and book accordingly, so then you should leave yourself with enough time to be able to make it to the plane on time. Also, when you come back, make sure you’ve booked a good leaving time that’s suitable for you, because if you stay in the car park too long, you might be liable for additional charges because you’re staying longer than you should, which is similar to what happens in normal pay to park car parks anyway, so it shouldn’t come as much of a surprise.