Airports are exciting, but they can also be extremely stressful, especially early in the morning or the day before or after really important holidays. But they can cause even more stress when you are getting there in your own car and you have to find a parking slot. UK airports tend to be very busy, which is why it's recommended that you arrive to the airport around three hours before your plane is leaving to make sure you have enough time to find an empty parking slot for your car and, of course, do the check-in and pass the security check before boarding your plane.