Delta cancels more flights, struggles to recover from Microsoft outage [Video]

Delta Air Lines CEO Ed Bastian apologized and offered frequent flyer miles to travelers for thousands of flight cancellations as the carrier struggled to recover from Friday’s globe-spanning IT outage, disruptions that sparked criticism from Transportation Secretary Pete Buttigieg.

The Atlanta-based airline canceled over 4,600 flights from Friday through Sunday, more than any other airline, according to aviation data firm OAG.

By Monday evening, Delta had already canceled another 900 flights, or 23% of its mainline operation, making up most of the day’s cancellations in the U.S., according to flight tracking site FlightAware.

The delays and cancellations have put Delta in a rare spotlight for the carrier whose leaders pride themselves on reliability and punctuality, and who market the airline as a premium carrier.

Bastian said in an internal video interview on Monday that it will “take another couple of days before we’re in a position to say that … the worst is clearly behind us.”

He said he spoke to Secretary Buttigieg …