ORD-DCA comes up pretty often for the last-minute weekend fares, but if you can get a sure thing for sub-200, go for it, since the alternative just gets more expensive if it doesn't come up as an e-saver.

If you haven't been to DCA for ten years, you're in for a treat. The new terminal is a beauty and it's right at the Metro. Now we know why they built the Metro station so far from the (old) terminal, they were thinking ahead (hahahahaha, DC joke).