If you're flying Delta today, you better check the status of your flight.
The Atlanta-based airline – which is one of the largest carriers at Minneapolis-St. Paul International Airport – grounded flights worldwide due to a computer outage that began around 1:30 a.m. Monday, a news release says.
By 8 a.m., the airline lifted the ground stop and resumed "limited departures," but customers should expect delays and cancellations.
Earlier Monday, Delta said "large-scale cancellations are expected."
As of noon Monday, Delta had canceled 427 flights, while operating 1,590 of its nearly 6,000 flights scheduled for Monday, the airline tweeted.
Delta is asking customers to check their flight status before heading to the airport, but notes there may be some "lag time" of accurate flight information on airport screens, online, on the Delta app, and also from Delta representatives on the phone and at the airport.
This isn't the first time computer issues have caused trouble for airlines. Just last month, Southwest Airlines canceled 2,000 flights nationwide because technology issues, The Associated Press says.
Here are some tweets from Monday morning: