Where you can connect: Throughout the airport.
What type of Internet access is available: Wireless Internet access (Wi-Fi) throughout the airport; sit-down computer terminals at gates B22, B37, C6, C16, C28 and D7.
What does it cost and service providers: Wi-Fi is available from AT&T ($7.95 a day, $19.95 a month), Sprint PCS ($9.95 a day, $49.95 a month) and T-Mobile ($6 an hour, $9.99 a day, and $39.99 a month). If you have any of these Wi-Fi plans on a monthly basis, you can get Wi-Fi access at Dulles for free. Otherwise, you'll have to pay the hourly or daily charge. Accessing the Internet via the sit-down stations in Concourses B, C and D is much more expensive: $3.50 to access, and $4 per every 10 minutes, averaging out to $27.50 per hour.
Other services: The Business Service Center on the ticketing level of the main terminal offers fax and copy machines, a notary, foreign currency exchange and other business services. It operates from 7 a.m. to 9 p.m. daily.
Note: Continental Airlines' Presidents Club and Northwest Airlines WorldClubs at Dulles offer free Wi-Fi, but you have to be a member to use their services.