Alaska Airlines temporarily grounded all flights across U.S. airports on Thursday following a major IT outage that disrupted its operations.
In a statement, the airline said it was “experiencing an IT outage affecting operations” and had issued a temporary ground stop. The company did not disclose how long the disruption would last or the number of flights affected but said teams were “actively restoring operations.”
The Federal Aviation Administration confirmed that the ground stop also applied to Horizon Air, which is operated by Alaska Airlines.
Alaska Airlines, part of the Seattle-based Alaska Air Group, primarily serves the U.S. West Coast and operates 140 destinations globally, including 37 states and 12 countries.
Hawaiian Airlines, which merged with Alaska Airlines last year, was not affected by the outage.
This marks the second major IT issue for Alaska Airlines this year. In July, a similar outage grounded flights for about three hours.
The airline has yet to respond to media requests for further details.
The disruption comes amid broader challenges in U.S. air travel following a partial government shutdown earlier this month, which has led to staffing shortages and flight delays at several airports.