Delta Air Lines CEO Ed Bastian said the carrier would take a $500 million hit related to the CrowdStrike outage, CNBC reported Wednesday.

The airline has been the slowest among major U.S. carriers to recover following the tech failure that led to more than 2,200 flight cancellations on July 19.

Analysts estimate the impact on its bottom line could be in the hundreds of millions of dollars. The airline did not immediately respond to a Reuters request for comment.

Earlier this week, CNBC had reported that Delta hired a law firm and would seek compensation from Microsoft and CrowdStrike over the outage.

Last week,te U.S. Transportation Department also announced it would open an investigation into Delta following the flight cancellations due to the outage.