I tried this on the MR forum, but had no responses, so I try again here.

I have to travel from PIT to BMI (Bloomington, IL) on July 4th with lots of time to spare. It's either PIT-ORD-BMI or something like PIT-IAD-IND-ORD-BMI, all on United Express. How busy is that day, especially on such regional routes? What are my chances of making it to BMI eventually, with 1 hour connection times? What are my chances for a bump? Thanks a lot,

Shuly