Airlines resume services after global IT crash wreaks havoc

A family boards a United Airlines flight at Chicago O'Hare International Airport after software issues delayed the flight over three hours on July 19, 2024. A technician removes software from an information display at Chicago O'Hare International Airport in Chicago on July 19, 2024, after software issues delayed and canceled flights globally.

Airlines were gradually coming back online Saturday after global carriers, banks and financial institutions were thrown into turmoil by one of the biggest IT crashes in recent years, caused by an update to an antivirus program.