Atlanta, CNN — Three days after a widespread computer update glitch led to over 5,000 flight cancellations globally in a single day, most airlines have returned to normal operations — except Delta Air Lines.
Delta, headquartered in Atlanta, canceled more than 1,000 additional flights on Monday, according to FlightAware, encompassing both its mainline services and Endeavor, its regional arm operating under the Delta Connection brand.
These cancellations on Monday represented over half of all flights grounded by airlines worldwide, and about three-quarters of U.S.-related flights, while other U.S. carriers reported cancellation rates of 2% or less. Delta’s disruptions follow 1,500 cancellations on Friday and nearly 3,000 more over the weekend.
The fallout left tens of thousands of frustrated Delta customers stranded, many struggling to secure alternative flights amid successive cancellations. The shortage of available hotel accommodations forced some passengers to spend nights in airports, while others endured hours on hold attempting to reach Delta customer service.
In a message to customers on Sunday, Delta CEO Ed Bastian attributed the issue to a malfunction in the airline’s “crew tracking” software.
“Our crew tracking-related tools were impacted and unable to handle the unprecedented volume of changes triggered by the system shutdown,” Bastian explained.
Despite efforts to resolve the issue, Delta’s crew tracking system remained unresolved as of Monday morning, as acknowledged in a video message from Bastian and Rahul Samant, the company’s chief information officer.
Delta’s operational challenges highlight ongoing difficulties in locating and deploying crew members effectively. The airline has offered premium pay to crew members and additional assurances regarding travel arrangements, indicating potential staffing issues extending through the week.
The disruptions come amidst what has been described as the “largest IT outage in history,” impacting an estimated 8.5 million computers worldwide. While CrowdStrike, the company responsible for the outage, reported many systems back online, the recovery process for airlines involves not only restoring computer functionality but also realigning crew and aircraft.
Transportation Secretary Pete Buttigieg has engaged with Delta leadership to ensure affected passengers receive adequate compensation, including refunds, rebooking options, and accommodations for delays.
As Delta works to stabilize operations, Bastian assured affected customers of continued support through meal vouchers, hotel stays, and travel vouchers as a gesture of apology.
The current challenges echo past incidents, such as Southwest Airlines’ disruptions during the 2022 holiday season, attributed to crew scheduling issues that prompted significant flight cancellations.
Delta continues to address the aftermath of the IT disruption amidst heightened summer travel demand, underscoring the complexity of restoring normal operations in the airline industry’s interconnected network.
