Delta Air Lines CEO Ed Bastian said the massive IT outage earlier this month that stranded thousands of customers will cost it $500 million. The airline canceled more than 4,000 flights in the wake of the outage,

Delta Air Lines has hired a law firm and will seek compensation from Microsoft and CrowdStrike over a global cyber outage earlier this month that disrupted flights around the world, CNBC reported on Monday.

Shares of Delta Air Lines Inc. DAL inched 0.46% higher to $43.23 Tuesday, on what proved to be an all-around mixed trading session for the stock market, with the Dow Jones Industrial Average DJIA rising 0.50% to 40,743.33 and the S&P 500 Index SPX falling 0.50% to 5,436.44.