Alaska Airlines brought its entire fleet to a stop Sunday night after a major tech failure shut down internal systems.

The airline told Fox News Digital the issue hit around 8 p.m. Pacific. Not long after, Alaska called for a full ground stop on all flights — including Horizon Air. The Federal Aviation Administration confirmed the halt on its site, listing “all destinations” as affected.

“We requested a temporary, system-wide ground stop… until the issue is resolved,” an Alaska spokesperson said. “We apologize to our guests for this inconvenience.”

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The airline’s website showed a red banner warning travelers about system issues and advising them to check flight info before heading to the airport.

Flights Frozen, No Timeline

There’s no estimate for when things will return to normal. Alaska said delays will stretch through the night.

The airline has more than 300 planes in service. Full fleet groundings are rare unless dispatch or scheduling tools go down completely.

The outage hit hardest on the West Coast. At Seattle-Tacoma International, Alaska’s main hub, passengers reported sitting on planes or stuck at gates with little information.

As of late Sunday, the company hadn’t said what caused the crash.

This story is developing. The Dallas Express will post updates as they come in.