Charlotte, NC? As in, way south of where you are now? That makes no sense, but then again that's the flight industry for you. Where are you flying out of? Make sure you know ahead of time how much time you have at each airport to find your next terminal; some of them have completely different buildings for different flights. I don't know if you've ever flown in or out of Dulles, but you have to take a tram to and from terminals A, B and C. It's very time consuming.