Delta Air Lines says its IT systems have been restored and flights are no longer grounded due to the technology problem.
The airline said in a statement Tuesday night that a "technology issue briefly affected" some of its systems, causing a ground stop order to be issued in the U.S. The order has now been lifted.
It was not immediately known how many people or flights were affected.
U.S. & World
The airline has not said what caused the problem.
During the ground stop, the airline's Twitter feed lit up with customer complaints.
"The technical issues are system-wide. We are even on a domestic flights ground stop. International flights are still going," the company tweeted in response to one complaint.
