O’Hare airport is what I avoid. Any problem anywhere in the USA including weather or whatever seems to affect the airport. I personally enjoy the food options there but after a while that wears thin on me after long delays.
Cincinatti for me works the best if I can arrange that.
Atlanta is also a problem. Houston is right there very close.
It seems that the airports try to pack to many landings and takeoffs into a short period of time. Weather really screws them up.
Paul E. Smith