 And I know the day is almost over, but they had 345 delays at Reagan National and 102 flights were canceled. Dulles International has 345 delays so far, nearly 106 cancellations. And at BWI Marshall, there are more than 289 delays and 34 cancellations. Some larger airports shut down entirely because of this glitch. Boston's Logan International shut down and LaGuardia in New York had to close.