why does Chicago airport have such a high rate. of delayed flights.

Just like in pro sports, someone's gotta finish in last place. Might as well be Chi-town...

Plane jackings

Lake Michigan

So many connecting flights, poor conditions anywhere else result in delays at Chicago.
Fights can't go out until flights come in.
So glad I don't fly anymore.

ORD is (I think) the busiest airport in the world, based on takeoffs and landings...with that many planes coming and going, it doesn't take much to foul things up...weather, hardware failures (ILS outage), runway repairs or maintenance...and the airlines go there because a lot of folks want and need to fly there.

Chicago has the lowest average IQ of the nation...