Many U.S. airlines were briefly hit by systemwide computer outages on Monday morning. The issue was the Aerodata planning weight and balance program, the Federal Aviation Administration said. Flights were delayed and planes that were taxiing had to return to their gates.

The outage affected several airlines, including Southwest Airlines, Delta Air Lines, American Airlines, United Airlines and Alaska Air Group.
But looks like the system is back up and flights should resume regularly soon. But the delays will likely linger throughout the day. Passengers have already been posting pictures of very long lines at major airports.
This comes just a week after several airlines reported problems after Sabre, a company airlines use for printing tickets and making reservations, had technical issues.
