whmere, I think you picked an already heavily booked travel weekend. I was recently looking at class availability for United out of BDL during the weekend of 2/14-2/17. On Saturday, Feb. 15, there are 5 Y/B seats to ORD available and zero Y/F seats available to IAD.
US is showing zero Y seats BDL-PHL, ONE Y seat BDL-PIT, and zero Y seats BDL-CLT on Saturday, Feb. 15.