The failure, in the airline’s computer network, forced it to ground flights Sunday night for about three hours. The outage, ...

Alaska Airlines flights were grounded due to a tech failure, causing nationwide disruptions and residual delays.

Alaska Airlines has resumed flights after the failure of a critical piece of hardware forced the airline to ground all its planes for approximately three hours.

"It will take some time to get our overall operations back to normal,” the airline said in a social media post.

The ground-stop began around 9 p.m. Alaska time on Sunday and lasted till midnight, after the failure of a piece of equipment ...