Question: what is the name of washington dc airport
Answer: Washington Dulles International Airport ( / ˈdʌlɪs / DUL - iss ) ( IATA : IAD , ICAO : KIAD , FAA LID : IAD ) is an international airport in the eastern United States , located in Loudoun and Fairfax counties in Virginia , 26 miles ( 42 km ) west of downtown Washington , D.