I already booked it, and I have no issue with IAD but DCA is just way more convienent for me. I will try and get there around 8am for the 10:30 flight. I looked on DCA's website for flight schedules and it looks like there is no 9:30 flight on Friday. Can someone confirm/unconfirm this? There should be one, as the flight schedule said everyday DCA-BOS at 9:30 X67 (Except Sat and Sun)