Washington, DC is serviced by three Airports:
In addition, there are taxis available. In Washington the cabs all use a 'zone' system to determine fares, rather than a meter like more modern cities. The zone maps and fares can be an easy way for out-of-towners to be taken advantage of by a driver. For more information on fares, zones and rates, please see the DC Taxicab Commission website. More information, along with a helpful Vistor's Guide is available from the Washington Post, here.
If you have any questions, please let us know.