Alaska Airlines has resumed flights after a system-wide IT outage on Monday forced the grounding of all Alaska Airlines and Horizon Air flights for roughly three hours, the airline announced. The technical issue led to a temporary halt across the carrier's entire network. In a post on social media, the Seattle-based airline confirmed that the ground stop was lifted. “As we reposition our aircraft and crews, there will most likely be residual impacts to our flights. It will take some time to get our overall operations back to normal,” the airline said. 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 The Federal Aviation Administration (FAA) website also showed a ground stop had been in place for all Alaska Airlines and Horizon aircraft, Horizon Air being a regional subsidiary of Alaska Airlines. While the airline did not specify the nature of the IT issue, it acknowledged it had affected the entire system. Alaska Airlines is experiencing an IT outage affecting operations. A temporary ground stop is in place. We apologize for the inconvenience. If you're scheduled to fly tonight, please check your flight status before heading to the airport. — Alaska Airlines News (@AlaskaAirNews) July 21, 2025 During the outage, a statement by the Alaska Airlines said, "At approximately 8 pm 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," Reuters reported. This is not the first time the airline has faced tech-related disruptions. In September 2023, Alaska Airlines briefly grounded flights in Seattle due to “significant disruptions” caused by an unspecified technology problem, which was resolved within hours. The airline has also been under scrutiny since a dramatic mid-air incident earlier this year. In June, the National Transportation Safety Board (NTSB) praised the crew of Alaska Airlines Flight 1282 for their response after a door plug panel detached shortly after takeoff on January 5, 2024, creating a hole in the fuselage that caused objects to be sucked out of the aircraft. No passengers were killed in the incident. As of now, Alaska Airlines has not detailed the exact cause of Sunday’s outage but is working to restore full operational capacity. (With inputs from AP, Reuters)
