Alaska Airlines says it has resumed flights after a nationwide ground stop due to a tech outage, but disruptions are likely to continue into Friday.

The Seattle-based carrier, which also operates Horizon Air and Hawaiian Airlines, said in a social media post at 3:24 a.m. ET Friday that operations had been restored "after a significant IT outage resulted in a system-wide ground stop of flights for Alaska and Horizon."

The ground stop was lifted at 11:30 p.m. Pacific time, the airline said, adding that it was "working to get our operations back on track as quickly and safely as possible."

From Thursday into Friday morning, the airline said more than 360 flights had been canceled on Alaska and Horizon. "Additional flight disruptions are likely as we reposition aircraft and crews thr

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