Sheryl-
Good catch on the IAD - TPA run. Just curious on how you figured the mileage. I am showing 810 non stop miles so for the round trip it's 1,620.
If you go IAD-ORD-TPA ($190.00 - 14 day adv.)and back the same day, the total mileage is 3,202.
Good deal if you must have 3,200 miles or 4 segments and have a day to blow.