I am based out of MCI....so naturally that leaves me MCI-ORD-MCI....MCI-DEN-MCI....and MCI-IAD-MCI.
I only flew IAD a few times this year, and was pretty sure DEN was low as well.
I flew MCI-ORD 22 times, on 11 different flight numbers (UA772 was most popular with 7)
I flew ORD-MCI 26 times, on 10 different flight numbers (UA393 was most popular with 8).