Alaska Airlines operates 238 Boeing aircraft, 87 Embraer planes, and 45 additional planes through Horizon Air. The Seattle-based company is the fifth-largest airline in the U.S., serving more than 44 million passengers annually.

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

Alaska Airlines has resumed operations following an undisclosed technical error affecting its entire system for approximately three hours.