FYI...the latest interim timetable (see
http://www.uatimetable.com/united.pdf ), updated September 20, 2001 at 1:00am is the first I've seen without any reference to flights to DCA. They've removed all the flights to/from DCA from the timetable and they are presumably canceled. As of right now united.com is still issuing tickets for these same flights, so they probably haven't loaded the cancelations into Apollo yet.