Alaska Airlines experienced an IT outage Sunday night, leading to a three-hour ground stop affecting its mainline and Horizon Air fleets. This resulted in 74 cancellations and 161 delays at Seattle-Tacoma International Airport by Monday afternoon. While operations resumed Sunday night, residual impacts continued, with the airline advising passengers to check their flight status and prepare for potential rebookings or refunds. Passengers are advised to contact Alaska Airlines customer service for assistance with cancellations or delays.

Prepared by Christopher Adams and reviewed by editorial team.