 Scott Carr, NBC News Radio. Air travelers are still dealing with flight cancellations two days after a global computer outage. Over 1,900 flights in the U.S. were canceled Saturday, over 7,400 delayed. The FAA says a massive number of cancellations on Friday caused a domino effect headed into the weekend. The outage was caused by a digital error in a software update issued by Microsoft and cybersecurity firm CrowdStrike.