Book a window seat too. This is one of the better views arriving and leaving. Also, a great Admirals Club, should you have access. That said, yes, easy access if all is on time. Plan a destination and enjoy. Security is usually not too bad. Of course, variances may be time of day, whether you have Pre-Check, etc., but DCA is an easy airport for the most part (or I find it to be, but I also find ORD to be, so you might consider your source )