I haven't flown out of O'Hare in a while but will be in October, TSA precheck on a sunday morning between 5am-9am most likely on American. How is the security wait times for TSA precheck?
pilam76 I'd recommend you get the TSA app for iphone or Android - it give you real time wait info for any airport
I could not remember if ORD had the CLEAR program or not (it does not).
Second Dan's app suggestion. Any given Sunday...
Just get Global Entry - Clear is useless for the cost and does less
half hour tops on a Sunday morning.