Delta's online systems were back up and running Tuesday after a brief outage, the airline said.
The airline had stopped flights after a system outage, according to a statement on the airline's website.
"Delta IT teams are working diligently to address a technology issue impacting some of our systems. We have issued a Delta groundstop as we work to bring systems back up as quickly as possible. We apologize to all customers for this inconvenience," the statement said.
It's unclear exactly how long...