Alaska Airlines says it has resumed operations after an IT outage forced the airline to issue a temporary, system-wide ground stop.
“Alaska Airlines has resolved its earlier IT outage and has resumed operations. We sincerely apologize for the inconvenience, and encourage guests to check your flight status before heading to the airport,” the airline posted on X at 2:39 a.m. ET on Monday, July 21.
According to the Federal Aviation Administration’s website, the request to ground all Alaska Airlines mainline flights was made around 10:52 p.m. ET.
It is unclear how many flights or passengers were affected by the ground stop. A regional subsidiary of Alaska Airlines, Horizon Air, was also impacted by the IT outage, according to reporting from CNN.
Alaska Airlines did not immediately respond to a USA TODAY request for comment.
What is a ground stop?
According to the FAA, a ground stop is a “process that requires aircraft that meet a specific criteria to remain on the ground.”
The FAA says the criteria may be airport specific, airspace specific or equipment specific.
Gabe Hauari is a national trending news reporter at USA TODAY. You can follow him on X @GabeHauari or email him at Gdhauari@gannett.com.
This article originally appeared on USA TODAY: Alaska Airlines lifts ground stop after resolving IT issue