Alaska Airlines requested ground stops for all its mainline aircraft, as per the US Federal Aviation Administration (FAA) status page update on Sunday.

As a result, all flights of the regional subsidiary Horizon Air have been inevitably been impacted. Preliminary reports did not sound the alarm on a particular reason promoting the requests. It was eventually shared that the US carrier was experiencing an IT outage. Further details on the issue are still awaited. 

UPDATE: The US airline resumed operations about two hours after its first announced IT outage had affected its aircraft schedule. “Alaska Airlines has resolved its earlier IT outage and has resumed operations,” @AlaskaAir shared on X. “We sincerely apologise for the inconvenience, and encourage guests to check your flight status before heading to the airport.”

ALSO READ

Alaska Airlines issues official statement on IT outage causing ground stops

“At approximately 8 p.m. Pacific on Sunday (0300 GMT on Monday), Alaska Airlines experienced an IT outage that’s impacting our operations. We requested a temporary, system-wide ground stop for Alaska and Horizon Air flights,” the news agency quoted Alaska Airlines’ message shared via email. A similar message was also shared on the airline’s official X account. 

The Seattle-based airline said aircraft would be affected throughout the evening to some extent. 

Passengers stranded as Alaska Airlines are grounded

In light of the immediate ground stops, thousands of passengers were pictured stranded at Seattle-Tacoma International Airport. “Hanging with a few thousand of my besties at Seattle Tacoma airport because of the @AlaskaAir grounding,” a user shared via X, plugging a snap of a crowded waiting area at the establishment.

Another individual wrote on social media, “Hey @AlaskaAir we’re stuck on the tarmac in #Seattle. The pilot said all Alaska systems are down for the next hour. Can someone in IT just unplug the computer, wait 5 seconds, and plug it back in?”

ALSO READ

As of April 2025, the US carrier operates a fleet of 238 Boeing 737s and 87 Embraer 175 aircraft across the country.

Last month, Alaska Air Group-owned Hawaiian Airlines informed that some of IT systems had been targeted by a hack.

Inputs from agencies. 

This is a breaking story. More Information will be added soon…