A systemwide computer outage caused headaches for JetBlue passengers Monday morning.

The outage forced staff at a number of U.S. airports including JFK to check in customers manually. 

Some customers expressed their frustration with the delays via social media.  

They say that they were unable to check in at the kiosks. 

In a statement, Jet Blue says the issue has been resolved, but customers may experience delays throughout the day.