Edited sentence: Parking at the airport in long-stay can involve a walk up to half a mile from the terminal building, and, as the airport sits in very exposed grounds, it is generally very breezy, cold and wet, the far long stay carpark surface often turns into muddy sludge and is really not the first experience you want after a few days in the sun.There is a bus service run by the car park owners (NCP) however it is VERY infrequent and appears to run only in the summer (every 30 mins) , you would be well advised to seek alternative parking facilities until the planned multi-storey car parking facility happens.To give an indication of just how bad access to the airport is, a 2 mile extension to the sliproad off the M4 at J33 has been built.Unfortunately these are 10 miles of some of the busiest roads in Cardiff, plus the route is through some residencial areas, look for the journey to take 30-40 minutes from the motorway junction depending on traffic