06:42 AM EDT, 08/12/2024 (MT Newswires) -- (Adds response from Microsoft ( MSFT ) in the fourth paragraph.)

Delta Air Lines ( DAL ) said Thursday it would pursue legal claims against CrowdStrike ( CRWD ) and Microsoft ( MSFT ) for the global outage that caused mass flight cancellations, costing the airline at least $500 million.

"An operational disruption of this length and magnitude is unacceptable, and our customers and employees deserve better," Delta Chief Executive Ed Bastian said in a statement on Thursday.

The direct revenue impact of the incident, which caused the Atlanta-based carrier to cancel 7,000 flights over five days, is estimated to be $380 million. Delta said the figure comes mostly from refunds and compensations to affected customers.

Responding to MT Newswires' request for comment. a spokesperson for Microsoft ( MSFT ) referred to remarks made public earlier in the week. Mark Cheffo of law firm Dechert wrote on behalf of Microsoft ( MSFT ) to Delta's lawyers saying the tech firm offered to assist Delta in the aftermath of the outage but "Delta turned down Microsoft's ( MSFT ) offers to help, even though Microsoft ( MSFT ) would not have charged Delta for this assistance," according to a letter acquired by various media outlets.

CrowdStrike ( CRWD ) did not respond to MT Newswires' request for comment.

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