


Topline
Alaska Airlines resumed flight operations early on Monday after a tech systems outage grounded it entire fleet—including planes operated by its subsidiary Horizon Air—for a few hours late on Sunday night.
Alaska Airlines requested a ground stop for its entire fleet due to tech issues.
In a statement on X early on Monday, Alaska Airlines said it has “resolved its earlier IT outage and has resumed operations.”
Alaska Airlines had previously said it was “experiencing an IT outage that's impacting our operations,” and has requested a “temporary, system-wide ground stop until the issue is resolved.”
The airline told ABC News that the outage began at around 11 p.m. ET, the post announcing the fix was made around 2:39 a.m. ET.
The company’s statement didn’t offer an details about the nature of the IT outage or specify how long it expects the ground stop to remain in effect.
The airline urged its passengers traveling on Sunday night to “check the status of your flight before leaving for the airport.”
According to a Federal Aviation Administration advisory, the airline first requested a ground stop for only the Alaska Airlines fleet, but this was was later expanded to include Horizon Air flights as well.
- That is the total number of passenger planes that are part of Alaska Airlines’ fleet, according to the company’s website, all of which are variants of the Boeing 737 and the newer 737 Max family. The carrier also has five air freighters in the fleet. Horizon Air operates 45 smaller regional jets made by Embraer.
This is a developing story.