I nominate BWI.

the bus service to the lots is awarded on a political plum basis (as is most activity at the airport), including management positions.

30 min waits are not unusual. missed stops are common. 4 busses in a row is standard.

the saving grace of BWI parking is all this mis service has created one of the largest 3rd party parking businesses in the world. the 3rd party service is the finest available. pickup at the car upon parking, pickup at the airport within 5 minutes.

I would guess there to be 5-10,000 spaces of private parking. at $6 a head, and a 75% filled rate, BWI is blowing $33k a day, over 12 mil a year.

the busses tend to be pretty crummy also.