Originally Posted by CAirBear

Yup just as he said. Although very soon I think the Metro will go all the way to IAD. It is the new Silver line I believe. I don't know if its operating yet or when it will, but if it hasn't it should be soon.

That will make life a lot easier for those trying to commute in and out of both airports or when you come in at one, but need to get to the other.