'We sincerely apologize': Alaska airlines resume operations after entire fleet was grounded; IT outage resolved

Alaska Airlines resumed its operations on Monday after grounding all flights for about three hours due to an IT outage. This was the second time in just over a year that the airline had to halt its entire fleet.

"Alaska Airlines has resolved its earlier IT outage and has resumed operations. We sincerely apologize for the inconvenience, and encourage guests to check your flight status before heading to the airport," the airline said in a post on X.

Alaska Airlines has resolved its earlier IT outage and has resumed operations. We sincerely apologize for the inconvenience, and encourage guests to check your flight status before heading to the airport.

— Alaska Airlines (@AlaskaAir) July 21, 2025

Earlier in the day, the airline asked for a system-wide ground stop for all Alaska and Horizon Air flights, saying the outage had affected its systems.

The US Federal Aviation Administration (FAA) confirmed on its website that all Alaska Airlines mainline and Horizon aircraft were under a ground stop. Horizon is a subsidiary of Alaska Airlines.

In September, Alaska Airlines had also grounded flights in Seattle for a short time due to what it described as “significant disruptions” caused by a technology issue. That problem was resolved within a few hours.