Alaska Airlines Devastated by Major IT Outage: Over Four Hundred Flights Canceled, And Forty-Nine Thousand Passengers Stranded in Nationwide Ground Stop!

On October 24, 2025, Alaska Airlines experienced a significant information technology (IT) outage, triggering a nationwide ground stop and halting all departures for approximately three hours. The outage led to over four hundred flight cancellations, affecting around forty-nine thousand passengers across the U.S. and marking the second major IT disruption for the carrier in 2025. While operations have largely resumed, recovery efforts continue, and the airline has pledged to undergo a comprehensive IT infrastructure review to prevent future failures.

What happened during the IT outage?

The outage began at approximately 18:00 UTC on October 24, when Alaska Airlines experienced a failure in its core IT systems, impacting flight scheduling, check-in services, and operations software. This failure caused major disruptions in Alaska Airlines’ ability to manage its flight schedule, including a halt to all departures. At 18:30 UTC, the Federal Aviation Administration (FAA) issued a nationwide ground stop for all Alaska Airlines and Horizon Air flights, impacting airports from Seattle-Tacoma International to Los Angeles International and beyond.

By 21:30 UTC, the ground stop was lifted, but delayed flights continued to cascade, affecting thousands of passengers. The recovery process started immediately, with over 400 flights canceled by the evening of October 24. Hotel accommodations and rebooking services were initiated for affected passengers, who faced long lines and delays for the remainder of the night.

Where were the impacts felt?

The IT failure had widespread effects across the Alaska Airlines network, with major disruptions occurring at key hubs like Seattle-Tacoma International (SEA), Los Angeles International (LAX), and Boston Logan (BOS). Flights from other airports, including Portland and Anchorage, were also significantly impacted. Many passengers reported being stranded at airports for hours, with limited communication from the airline regarding the status of their flights.

While international flights were largely unaffected, the domestic network, especially flights operated by Alaska Airlines and its regional subsidiary Horizon Air, bore the brunt of the disruption. Passengers traveling on these flights experienced delays of up to eight hours or more.

When did the issue begin, and how long did it last?

The IT system failure began around 18:00 UTC on October 24, 2025, with a ground stop issued by the FAA shortly thereafter. Operations resumed on a partial basis by 21:30 UTC, but it took until the morning of October 25 for full operations to normalize. Over 400 flights were canceled, and the airline worked throughout the night to rebook passengers and provide accommodations.

Why did the IT outage happen?

Alaska Airlines has attributed the IT outage to an internal technical failure within its core systems, which are responsible for critical functions such as flight scheduling, reservation management, and weight-and-balance calculations. The airline has emphasized that the issue was not linked to external factors such as a cyberattack or government shutdown. This marks the second IT failure for Alaska Airlines in 2025, the first occurring in July when a similar system malfunction grounded flights for several hours.

Alaska Airlines has acknowledged that the incident was unacceptable and has committed to a comprehensive review of its IT infrastructure, working with external experts to enhance system resilience. The airline aims to implement upgrades that focus on redundancy, backups, and failover systems to ensure a more robust system moving forward.

How did the airline respond?

In response to the outage, Alaska Airlines immediately activated its contingency plans, which included manual overrides for critical functions. The airline worked to rebook affected passengers and provide hotel accommodations for those stranded at airports. The airline also waived change fees for affected travelers and provided meal vouchers to help ease the inconvenience.

Despite these efforts, passengers faced significant disruptions, with many reporting long wait times for rebooking, delays in receiving compensation for baggage claims, and difficulty securing reimbursements for incidentals. Social media was flooded with complaints, as travelers expressed frustration over the lack of communication and long queues for assistance.

Passenger and Operational Impact

The scale of the disruption was significant, with approximately 49,000 passengers affected by the IT outage. Many passengers faced missed connections, long waits for rebooking, and exhaustion from extended airport stays. The outage also exacerbated existing challenges in the air travel system, with passengers on other carriers experiencing delays due to shared gates and airport congestion.

Preliminary estimates suggest that the economic toll on Alaska Airlines could be substantial, with millions in costs related to re-accommodations, travel vouchers, and lost revenue. The airline’s ongoing recovery efforts include rebooking passengers on alternative flights and offering compensation to those impacted by the disruption.

Broader Implications for the Airline Industry

This incident highlights the growing dependence of the airline industry on digital systems, with even minor IT failures causing massive disruptions. The outage underscores the vulnerability of airlines to technological failures, which have been a growing concern in the aviation sector.

Alaska Airlines’ second IT failure in four months raises questions about the resilience of its infrastructure, particularly as the airline continues to expand following its merger with Hawaiian Airlines. Other airlines, including Delta and United, have faced similar issues in recent years, underscoring the need for continuous improvement in IT systems and disaster recovery plans.

Conclusion

The Alaska Airlines IT outage on October 24, 2025, caused widespread disruption across the carrier’s domestic network, with over 400 flights canceled and nearly 50,000 passengers affected. While operations have largely returned to normal, the airline continues its recovery efforts, working to rebook passengers and address the economic impact of the disruption. In the aftermath, Alaska Airlines has committed to a full review of its IT infrastructure and plans to implement upgrades to ensure future resilience.

As the airline industry grapples with increasing reliance on digital systems, this incident serves as a reminder of the fragility of modern air travel and the need for robust backup systems to mitigate the impact of such failures. Passengers are advised to stay updated on their flight status and seek assistance from Alaska Airlines customer service if their travel plans are affected.

Image: Alaska Airlines

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Alaska Airlines already tried to shore up its IT infrastructure after an outage in July forced the Seattle-based company to ground flights across the country.

Apparently, it wasn’t enough.

Alaska was hit with another major outage on Thursday, leading to a ground stop that lasted eight hours and resulted in more than 400 flights canceled across Alaska Airlines and its subsidiary Horizon Air.

In a new update Friday afternoon, the company said more than 49,000 passengers had their travel plans disrupted.

The outage was severe enough to postpone the company’s scheduled quarterly earnings call Friday. Shares were down more than 6%.

Alaska said it was still working to normalize operations.

The company has blamed the outage on a failure at its primary data center. It was not due to a cybersecurity incident.

“Following a similar disruption earlier this year, we took action to harden our systems, but this failure underscores the work that remains to be done to ensure system stability,” the company said in its latest update. “We are immediately bringing in outside technical experts to diagnose our entire IT infrastructure to ensure we are as resilient as we need to be. ”

It added: “The reliability of our technology is fundamental to our ability to serve guests and get them to where they need to be.”

Alaska said its July outage was caused by a failure of a “critical piece of hardware” at its data centers.

The airline operates a hybrid infrastructure, blending its own data centers with third-party cloud platforms, according to an interview last year with Vikram Baskaran, Alaska’s vice president of IT.

Alaska began migrating workloads to Microsoft Azure around 2015 and continues to maintain its own data centers for critical workloads, according to the interview.

The company last year partnered with Google Cloud on a generative AI-powered search experience.

The impact of this week’s outage was evident at Sea-Tac Airport on Thursday evening, where long lines wrapped around the concourse and a maze of suitcases piled up in the baggage claim area.

Alaska said Friday it does not have an estimate of the financial impact of the outage. The company’s Hawaiian Airlines subsidiary was not affected.

Alaska said the July outage was expected to reduce earnings by about $0.10 per share, or roughly $12 million.

The company on Thursday reported third quarter revenue of $3.8 billion, up 1.4% year-over-year, while profit dropped 69% to $123 million.

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Follow-up: Alaska Airlines will ‘diagnose our entire IT infrastructure’ after latest outage disrupts 49,000 passengers

Alaska Airlines is still working to restore operations following a major outage that forced the Seattle-based company to cancel more than 360 flights on Alaska and its subsidiary Horizon Air.

The outage began Thursday around 3:30 p.m. PT. Alaska grounded planes across the U.S. as it addressed what it described as a “significant IT outage.”

In a statement, Alaska said a “failure occurred at our primary data center.” The outage was not a cybersecurity incident, according to the company.

“The IT outage has impacted several of our key systems that enable us to run various operations, necessitating the implementation of the ground stop to keep our aircraft in position,” Alaska said. “The safety of our flights was never compromised.”

The ground stop was lifted at 11:30 p.m. PT Thursday, but the company is still actively addressing operational impacts that resulted from the disruption.

The company canceled its planned third quarter earnings call on Friday. “We do not yet have an estimate of the financial impact of the operational disruption on our fourth quarter results,” Alaska said in a regulatory filing. The company reported revenue of $3.8 billion, up 1.4% year-over-year, while profit dropped 69% to $123 million.

The impact of the outage was evident at Sea-Tac Airport on Thursday evening, where long lines wrapped around the concourse and a maze of suitcases piled up in the baggage claim area.

The company’s Hawaiian Airlines subsidiary was not affected.

Alaska encouraged customers to check their flight status before heading to the airport, and flagged its flexible travel policy.

It’s Alaska’s second outage in three months. The Seattle-based airline grounded flights after an IT outage in July that lasted about three hours.

Updated at 8:40 p.m. Pacific.

Alaska Airlines said it’s recovering from an IT outage and “actively restoring operations” as of 7 p.m. Thursday after grounding flights across the U.S. for about three hours.

In a statement sent to GeekWire, Alaska said the outage began around 3:30 p.m. PT with a failure at the company’s primary data center.

“The IT outage has impacted several of our key systems that enable us to run various operations, necessitating the implementation of the ground stop to keep our aircraft in position,” the company said. “The safety of our flights was never compromised.”

The outage was not a cybersecurity event or related to other events, according to Alaska.

Flights are resuming but passengers at some airports are facing long delays as they await inbound planes.

During the outage, passengers on Reddit reported that some planes were sitting on the tarmac or de-boarding. Customers also reported issues with the company’s app and website.

It was Alaska’s second outage in three months. The Seattle-based airline grounded flights after an outage in July that lasted about three hours.

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) October 23, 2025

100 fewer Alaska Airlines aircraft in the air now compared to last week as the airline is experiencing an IT outage this evening. Some flights are now departing, but a delays will be felt for some time to come. pic.twitter.com/zIkJTTETiz

— Flightradar24 (@flightradar24) October 24, 2025

Hanging out with my Alaska homies on the tarmac at SEATAC
byu/DripIntravenous inAlaskaAirlines

A detailed explanation of this week’s Amazon Web Services outage, released Thursday morning, confirms that it wasn’t a hardware glitch or an outside attack but a complex, cascading failure triggered by a rare software bug in one of the company’s most critical systems.

The company said a “faulty automation” in its internal systems — two independent programs that began racing each other to update records — erased key network entries for its DynamoDB database service, triggering a domino effect that temporarily broke many other AWS tools.

AWS said it has turned off the flawed automation worldwide and will fix the bug before bringing it back online. The company also plans to add new safety checks and improve how quickly its systems recover if something similar happens again.

Amazon apologized and acknowledged the widespread disruption caused by the outage.

“While we have a strong track record of operating our services with the highest levels of availability, we know how critical our services are to our customers, their applications and end users, and their businesses,” the company said, promising to learn from the incident.

The outage began early Monday and impacted sites and online services around the world, again illustrating the internet’s deep reliance on Amazon’s cloud and showing how a single failure inside AWS can quickly ripple across the web.

Related: The AWS outage is a warning about the risks of digital dependance and AI infrastructure

Unless you’ve been on a “digital cleanse” this week, you know that Amazon Web Services (AWS) had a major outage at the start of the week.

You know this because apps and sites you use were down. Credible reports estimate at least 1,000 sites and apps were affected. Large swaths of modern digital life went dark: from finance (Venmo and Robinhood) to gaming (Roblox and Fortnite) to communications (Signal and Slack). Some people couldn’t even get a good night’s sleep because the outage took out “smart beds.” Even sporting events were impacted when Ticketmaster failed.

We’ve seen outages before, but this one seemed broader and harder to ignore.

In the wake of the outage, many well-intentioned hot takes boiled down to: “They should’ve used more cloud providers.”

Setting aside the subtle victim-blaming, there’s also the fact that in a world with only three major cloud providers (AWS, Microsoft Azure, Google Cloud) if you want to “diversify” there’s not a lot of diversity out there.

And the argument for diversity in cloud providers is really about market diversity, not individual organizations juggling multiple vendors. More competition in the cloud market would mean fewer cascading failures when one provider goes down.

The key question when something like this happens is whether we’re taking the risk lessons and expanding them beyond the immediate problem to see the emerging problems. 

Instead of saying organizations need to have multiple cloud providers, we should be asking how we’re dealing with the reality of highly concentrated risks with exceptionally broad impact because we just had an object lesson in what that really means.

In this recent outage there’s a pointer to where we should be looking proactively to apply this lesson: generative AI. This recent AWS outage gives us two lessons for the emerging generative AI ecosystem.

Concentration crisis in AI

With the generative AI ecosystem, I’m talking not about chatbots — I mean AI-native applications that are built on generative AI as a platform. We just saw that when there’s no cloud, there’s no cloud-native application. Likewise, when there’s no generative AI provider, there’s no AI-native application.

The first lesson from the AWS outage for AI-native applications is what happens to an industry when there’s a limited number of providers for centralized resources and there’s an outage. We just saw: it has huge rippling effects across the industry and all walks of life built on it.

It’s a throwback to the mainframe era: when “the computer” is down, it’s down for everyone.

There are as few, if not fewer, generative AI providers as there are cloud providers. A major outage is inevitable — that’s just engineering reality. When that happens, every AI-native app built on that generative AI platform will also go down, full stop.

The impact could be even more severe than the AWS outage. It will be more like “the computer is down, and the people are gone” for many different industries and services. Ironically, the “smarter” the industry and service, the greater the potential fallout.

The second lesson is one of intertwined risk. OpenAI itself was affected by this week’s AWS outage. 

That means AI-native apps have double exposure to the risks around a limited number of providers for critical, centralized resources. For AI-native apps, it’s like the mainframe era squared. If the generative AI platform fails, everything built on it fails. And if the cloud that hosts the AI platform fails, it all goes down, too.

This is not to say don’t do cloud or don’t do AI. But it is to say we need to understand this new, complex intertwining of risks inherent in a world where everything is relying on a small number of key providers and that small number of key providers also rely on a small number of key providers.

The realities of physical requirements and capital investment required for cloud and generative AI make a truly diverse ecosystem impracticable for either. I don’t think anyone sees more than a literal handful of providers for either of these in the future. 

The bottom line

Highly concentrated risks with exceptionally broad impact aren’t going away anytime soon. 

But the growth of generative AI providers — and their reliance on cloud providers — show where there is going to be growth and where and what those risks will be. The growth will be upwards, as technologies stack on top of and rely on each other. And that means these risks are only going to become more concentrated and the impacts even broader.

In the world of security, there’s the “CIA” triad: “confidentiality”, “integrity” and “availability.” In the first days of “Trustworthy Computing” at Microsoft, the principles included “availability.” But in recent years, availability has been overlooked often as security and privacy concerns understandably dominate.

A thoughtful application of the AWS outage tells us that outages like this are a kind of problem that isn’t an anomaly: it’s inherent in the nature of today’s technology reality. And since there are no easy solutions and only increasingly complex problems around this, we need to start understanding this new reality and thinking seriously about how to mitigate these risks.

Amazon’s e-commerce customers are experiencing unusual delivery delays following the Amazon Web Services outage on Monday — suggesting that the cloud glitch has impacted the company’s own operations more than previously reported.

Customers posting on Reddit and X reported Amazon orders that were scheduled for Monday delivery but did not arrive. Some of the comments:

• “I received a delay email on everything due today. Coming tomorrow and I’m fine with that.”
• “I have 4 items that are suppose to be delivered today as well and they haven’t even left the facility. So I’m sure it’s the outage.”
• “My amazon fresh order was cancelled at 5:15PM.”

Amazon workers posting on the “r/AmazonFC” Reddit community cited downtime at fulfillment centers.

• “Today was the first day I’ve experienced an entire day of downtime, and not as a shutdown for maintenance. Very odd feeling to maintain a constant state of readiness for 10 hours in case the system comes back at any moment.”

We reached out to Amazon for details about delayed deliveries.

Amazon’s package fulfillment systems run atop AWS infrastructure — so disruptions in key AWS services can ripple directly into its retail and logistics network.

Amazon’s logistics arm processes about 17.2 million delivery orders per day, according to Capital One.

The fallout from delayed deliveries could lead to increased costs due to potential refund obligations and additional labor needs.

The outage started shortly after midnight Monday and lasted for about three hours, but the aftershock effects were felt by Amazon’s cloud customers for much of the day. The company blamed a DNS resolution issue with its DynamoDB service in US-EAST-1 region, it oldest and largest digital hub. Major outages originating from this same region also caused widespread disruptions in 2017, 2021, and 2023.

The outage impacted everything from sites including Facebook, Coinbase, and Ticketmaster, to check-in kiosks at LaGuardia Airport. Amazon’s own retail site, its Prime Video streaming service, and its Ring subsidiary were also affected.

Despite the major outage, Amazon’s stock was up Monday and in early Tuesday trading.

The effects of the massive AWS outage reached the sports world on Monday.

Ticketmaster was dealing with ticket management issues as a result of the outage, according to messages shared by several sports teams hosting games on Monday, including the Toronto Blue Jays and Seattle Seahawks.

The Blue Jays, facing off against the Seattle Mariners in a Game 7 MLB playoff bout at Rogers Centre in Toronto, posted a statement earlier Monday about the outage and advised fans to “hold off on managing your tickets as we work through this.”

A few hours later, the team said ticket management was returning to normal.

>World Series appearance on the line
>AWS outage sends Ticketmaster down
>Blue Jays fans can't access Game 7 tickets
>Blue Jays opponent…Seattle
>Amazon headquarters…Seattle https://t.co/OYjjDj5cdf pic.twitter.com/rbNnwKYegG

— Morning Brew ☕️ (@MorningBrew) October 20, 2025

The Seahawks, which are hosting the Houston Texans for Monday Night Football in Seattle, issued a statement about the outage “that may impact access to Ticketmaster, Seahawks Account Manager, and the Seahawks Mobile App.”

The Detroit Lions, hosting their own Monday Night Football game, also had ticketing impacted.

The outage effects went beyond just ticketing. The Premier League said its VAR tech system, used to determine offside calls in soccer, would not be available for Monday’s match between West Ham and Brentford.

Amazon’s outage began shortly after midnight Pacific in Amazon’s Northern Virginia (US-EAST-1) region, which is AWS’s oldest and largest cloud region, a popular nerve center for online services.

In an initial update, AWS said the outage was related to a DNS resolution issue with its DynamoDB product, meaning the internet’s phone book failed to find the correct address for a database service used by thousands of apps to store and find data.

Amazon later said the root cause of the outage was an “underlying internal subsystem responsible for monitoring the health of our network load balancers.”

By 3 p.m. PT, the company said all AWS services had returned to normal operations.

Major sites and services including Facebook, Snapchat, Coinbase and Amazon itself were impacted — reviving concerns about the internet’s heavy reliance on the cloud giant.

The outage suggests that many sites have not adequately implemented the redundancy needed to quickly fall back to other regions or cloud providers in the event of AWS outages.

Previously:

• AWS outage was not due to a cyberattack — but shows potential for ‘far worse’ damage
• AWS outage hits major apps and services, resurfacing old questions about cloud redundancy