Alaska Airlines flights were back late Sunday night after an IT outage forced the company to ground all flights for three hours.
From 8 p.m. until 11 p.m. PST, Alaska Airlines planes were on hold. The airline did not reveal the nature of the outage.
“As we reposition our aircraft and crews, there will most likely be residual impacts to our flights. It will take some time to get our overall operations back to normal,” Alaska Airlines said.
As a result of the airline-wide grounding, over a third of Alaska Airlines’ 900 flights that day were delayed, according to flight tracker FlightAware. Only 68 flights, representing 7% of the airline’s routes that day, were canceled Sunday.
By Monday morning, only 100 flights were delayed. Another 60 flights were canceled.
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In April 2024, Alaska Airlines grounded all its flights due to a problem with its system that calculates the weight and balance of its planes.
Last month, Alaska Airlines-owned Hawaiian Airlines revealed it had suffered a hack in its IT systems. At the time, travel was not affected.