Welcome to DC!!

As both posters above indicate it's all about where you live. DC is a great area but traffic is a nightmare, really. Figure out where you'll be living than decide which airport is more convenient. It's taken me over 1.5 hours to get to DCA for a morning flight, but only 30 minutes to get home because rush hour was over. And yes, contrary to the opinion posted, my preference is IAD. The security lines can be long but they move, whereas I can sit in DCA's lines for the same amount of time and feel like I'm standing still.

ps Check out the happy hour thread in Community if you're interested in meeting other DC FT'ers