On the evening of July 20, 2025, Alaska Airlines experienced a significant IT outage forcing a system-wide ground stop for all its mainline and Horizon Air flights.
The disruption, which began around 8:00 p.m. Pacific Time, halted operations across the United States, leaving passengers stranded and flights delayed.
Ground Stop Initiated
The Federal Aviation Administration (FAA) confirmed Alaska Airlines’ request for a ground stop, affecting destinations from the Pacific Northwest to the East Coast.
“At approximately 8 p.m. Pacific on Sunday, 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 until the issue is resolved,” the airline said in a statement Sunday evening.
The outage impacted critical systems, including flight scheduling and operational processes, though the airline did not disclose the exact cause.
Unlike a previous cyberattack on the Port of Seattle in September 2024, Alaska Airlines has not linked this incident to malicious activity, suggesting it may stem from a technical glitch or system failure.
The airline has issued a statement apologizing for the inconvenience and urged passengers to check flight statuses on its website or app before heading to airports.
However, with systems down, many travelers faced challenges accessing real-time updates. The FAA noted that residual delays were likely to persist into the night, with no clear timeline for full resolution provided at the time.
Impact on Passengers
The ground stop disrupted thousands of passengers, particularly in Alaska Airlines’ key regions like Alaska, the Pacific Northwest, and the western United States.
Social media posts saw travelers reporting long waits at airports and uncertainty about rebooked flights. For many, the outage meant missed connections, canceled plans, and extended travel times, especially as the evening timing affected late-night flights.
Alaska Airlines, known for its strong customer service, faced a public relations challenge. The airline advised travelers to stay updated via its digital platforms, but with systems compromised, communication was limited.
This incident follows similar disruptions, including a September 2024 outage at Seattle-Tacoma International Airport and an April 2024 ground stop due to a weight and balance system issue.
What Causes These Outages?
Airline IT systems are complex, often relying on outdated infrastructure or third-party vendors. These legacy systems are prone to failures, as seen in recent years with multiple carriers.
The latest outage highlights the aviation industry’s vulnerability to technological disruptions, which can cost millions in delays, refunds, and lost trust.
While Alaska Airlines has not yet confirmed the cause, experts suggest that cloud service issues, software updates, or network failures could be to blame.
Looking Ahead
Alaska Airlines is now working to restore systems and resume normal operations. The FAA and the airline are coordinating to minimize delays, but travelers should expect ripple effects into Monday July 21.
Passengers are encouraged to check flight statuses frequently and consider rebooking options if necessary.
This incident highlights the need for airlines to invest in robust, modern IT infrastructure. As air travel demand grows, ensuring reliable systems is critical to avoid widespread disruptions.
For now, Alaska Airlines passengers can only wait as the airline navigates this latest challenge.
