Alaska Airlines halted all departures at airports nationwide on the day due to a technical issue.
The airline said in a statement that it was "facing an IT outage affecting flight schedules" and implemented "a temporary ground stop."
The airline did not say how long the outage would continue or how many flights were affected. It stated it was "actively restoring our services" following the incident.
The operational halt also impacted Horizon Air, which is a subsidiary of Alaska Airlines, as per an notice by the Federal Aviation Administration.
The airline, a member of The Alaska Air Group based in Seattle, Washington, primarily operates on the West Coast of the United States. It connects numerous locations globally, including multiple states and dozens of nations, according to its online platform.
Last year, the airline joined forces with another carrier, which was not impacted by the day's ground stop.
It is the latest technical failure affecting the airline this year. In July, an issue halted flights for about three hours.
The company did not immediately respond on the day to requests for comment.
Air transportation in the US has been disrupted in the past few weeks due to the US government shutdown that began earlier this month. Shortage of flight controllers reporting for duty has delayed flights at multiple locations.
