Originally Posted by
sky_priority
Flew into DCA yesterday and noticed that there were three small planes waiting in the holding area off the taxiway for vacant gates. The skyclub also seemed particularly crowded although well-staffed (and I am happy about the recent renovations -- thank you Delta)! But please add gate capacity during peak evening hours

It could also be due to added flights as of 10/31 as noted in this thread:
http://www.flyertalk.com/forum/delta...me-change.html