Delta cancels another 600 flights on Monday in wake of cyber outage

(Reuters) - Delta Air Lines canceled more than 600 flights on Monday, as the U.S. air carrier continued to struggle to restore operations after last week's global cyber outage, even as other airlines were recovering from the incident.

About 16% of Delta's flights had been canceled as of 7:00 a.m. EST, according to data from FlightAware, out of roughly 1,100 flights to or from the United States overall, the web site said. The issue has stranded thousands of Delta travelers across the United States, with some having to rent cars to drive hundreds of miles while others could have to wait days for new flights or cancel trips altogether.

The Atlanta-based airline is battling operational issues after the outage hit its crew tracking system. Delta's total number of canceled flights since Friday has exceeded 5,000. A Delta spokesperson did not immediately respond to an emailed request for comment. A software update by global cybersecurity firm CrowdStrike triggered system problems for Microsoft customers, including many airlines, on Friday.

Although other U.S. airlines have largely recovered, Delta has struggled to return to normal. American Airlines had called off 1% of its flights on Monday, while United Airlines canceled less than 1%.