Reserve on time
It is important to note that the cheapest parking spots are always booked first so if you wait too long to reserve your space, you could be paying a lot extra than necessary. Furthermore, a lot of providers only let you book in advance and no later than two weeks before your departure. Booking your parking space at least one week before you fly is the best way to ensure you still have multiple providers at cheap prices that you can compare. Otherwise you could end up paying a lot of money for a car park that is far away from the airport.