There is one Metro stop directly in Crystal City, an express bus with dedicated lanes from another close station, and Metro is in the final planning stages to build a new station between those. The VRE, a Virginia light rail system that uses Amtrak tracks, has a stop in Crystal City. There are bus routes too, and bike lanes. And Reagan National Airport is directly adjacent.

Public transit to Crystal City is about as good as it gets. Which is good, because the road traffic sucks.