Sea-Tac flights disrupted by cyberattack
A targeted cyberattack has been confirmed as the reason for a major IT outage at the Port of Seattle over the weekend.
The IT outage caused major travel disruption with hundreds of flights delayed at Seattle-Tacoma International Airport.
“We are conducting a thorough investigation with assistance of outside experts We have contacted and are working closely with federal partners, including TSA and Customs and Border Protection,” said Lance Lyttle, Aviation Managing Director.
Although TSA operations including passenger security screening were unaffected, flight delays occurred due to non-operable check-in systems.
This caused lengthy manual check-in, resulting in long lines for passengers over the weekend.
FlightAware reported 460 flight delays and five flight cancellations on Sunday.
More than 70,000 passengers were scheduled to fly on Sunday.
The cyberattack outage also disrupted baggage systems.
“We are starting to see some impacts with the Port of Seattle’s baggage sorting system, so we are proactively warning guests who are flying out of Seattle to avoid checking a bag if possible,” Alaska Airlines said.
The Port of Seattle’s public website was still offline by Monday morning.
The reason why the Port of Seattle was targeted in the cyberattack remains unknown.
Related News Stories:
Related News Stories: Sea-Tac Airport officials confirm cyberattack disrupted service ... Delays continue at SeaTac Airport after potential cyberattack Little known about cyberattack that has disrupted Sea-Tac Airport ... System outage (cyberattack?) at SeaTac. Anyone there with ... Suspected cyberattack outage continues at Port of Seattle, causing ... Sea-Tac airport computer outage is ongoing. Here's what travelers ... Delays, outages continue after SEA Airport cyber attack | FOX 13 ... Worldwide tech outage disrupts Sea-Tac flights, banks, KOMO News ... Apparent cyberattack leaves Seattle airport facing major internet ... Seattle airport confronts 4th day of cyberattack outages ...
TravelMole Editorial Team
Editor for TravelMole North America and Asia pacific regions. Ray is a highly experienced (15+ years) skilled journalist and editor predominantly in travel, hospitality and lifestyle working with a huge number of major market-leading brands. He has also cover in-depth news, interviews and features in general business, finance, tech and geopolitical issues for a select few major news outlets and publishers.
Vegas’s Billion-Dollar Secrets – What They Don’t Want Tourists to Know
Visit Florida’s New CEO Bryan Griffin Shares His Vision for State Tourism with Graham
Chicago’s Tourism Renaissance: Graham Interviews Kristin Reynolds of Choose Chicago
Graham Talks with Cassandra McCauley of MMGY NextFactor About the Latest Industry Research
Destination International’s Andreas Weissenborn: Research, Advocacy, and Destination Impact
Graham and Don Welsh Discuss the Success of Destinations International’s Annual Conference
Graham and CEO Andre Kiwitz on Ventura Travel’s UK Move and Recruitment for the Role
Brett Laiken and Graham Discuss Florida’s Tourism Momentum and Global Appeal
Graham and Elliot Ferguson on Positioning DC as a Cultural and Inclusive Global Destination
Graham Talks to Fraser Last About His England-to-Ireland Trek for Mental Health Awareness
Kathy Nelson Tells Graham About the Honour of Hosting the World Cup and Kansas City’s Future
Graham McKenzie on Sir Richie Richardson’s Dual Passion for Golf and His Homeland, Antigua
ADS PRO 
France prepares for a massive strike across all transports on September 18
Turkish tourism stalls due to soaring prices for accommodation and food
CCS Insight: eSIMs ready to take the travel world by storm
Germany new European Entry/Exit System limited to a single airport on October 12, 2025
Airlines suspend Madagascar services following unrest and army revolt