PHILADELPHIA _ American Airlines computer issues that caused major delays at Philadelphia International Airport have been resolved, officials said.
A spokeswoman for American, the dominant carrier in Philadelphia, said the issues were caused by the airline's systems not coming back online early Wednesday after a planned overnight internet outage.
That outage was from 1 a.m. to 4 a.m. Eastern, airline spokeswoman Katie Cody said. But it took about four more hours for the airline's network to be restored.
The airport said American's computers were running again by about 8 a.m. and a ground stop that had been in place for American flights from other airports to Philadelphia had been canceled.
Delays and cancellations were expected throughout the morning as operations resumed.
Other airlines were not affected.
Travelers were reporting long check-in lines due to the downed systems.
American was still able to check in passengers during the outage, but the process was much slower, Cody said.
It wasn't immediately known why American's systems didn't work properly after the planned outage.
