Hi!
Why don't the airlines schedule their landings and takeoffs at each airport so there will be no landing/takeoff/gate access delays? Obviously, there is no controlling the WX, but if the airlines schedule 1000 movements at O'Hare between 1700-1900, and it can only accomodate 500 mvmts, delays will occur.
If I were gov't I would not allow more landings/takeoffs per hour, at any airport, than can be accomodated by ATC, the runways, taxiways and the gate availability. That would solve a huge chunk of the delay problems.
cliff
NBO