Update 11am: JetBlue says the computer issues have been resolved, but flight delays will persist throughout the day.
Due to computer issues, JetBlue is experiencing system-wide delays Friday morning. As an example, none of the morning JFK to LAX flights have departed yet, and delays are rising to over three hours. We will update this page as we get more information.
We have been experiencing flt delays today due to IT network connectivity issues. Expect delays today and check @jetblue for flight info.
— Rob Maruster (@JetBlueCOO) September 13, 2013
While most flights do indeed seem to be delayed, data from Planefinder shows that some flights are departing.