Alaska Airlines will be conducting a wide-scale review of its IT infrastructure after flights were grounded after another IT outage.

Last Thursday, the airline suffered an outage at its primary data center, preventing flights across Alaska Airlines and its subsidiary Horizon Air from taking off for eight hours.

This was the second such outage in recent months, after a data center issue occurred in July and prevented flights for three hours.

In a statement shared over the weekend, Alaska Airlines said that nearly 50,000 travelers were impacted during the latest outage.

According to the airline, the outage impacted several "key systems that enable us to run various operations, necessitating the implementation of the ground stop to keep our aircraft in position," starting at 3:30 pm.

The airline added: "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. 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."

Alaka Airlines' subsidiary Hawaiian Airlines was not impacted during the outage; however, that airline also experienced issues in June of this year.

According to Alaska Airlines' 2024 Annual Report, it operates a data center in one of the several owned or leased buildings near Seattle-Tacoma International Airport. The report states: "We also lease operations, training, administrative, and data center facilities in Burlingame, CA; Long Beach, CA; Honolulu, HI; Portland, OR; Puyallup, WA; Quincy, WA; Renton, WA; Seattle, WA; and Spokane, WA."