Delta Air Lines is working to restore normal operations following a significant Amazon Web Services (AWS) outage on Sunday, October 19, 2025, that caused widespread flight delays and cancellations across the United States. The technical issues disrupted the websites and mobile applications of several major carriers, including Delta, impacting passenger check-ins and access to flight information. The disruption led to hundreds of delayed flights for Delta, leaving many passengers stranded and facing uncertainty. While the initial technical problems stemmed from AWS, the event highlights the vulnerability of airline operations to third-party technology failures. The airline is still dealing with the cascading effects of the initial disruption, with reports of continued delays as it works to get crews and aircraft back on schedule. This incident is reminiscent of a similar outage in July 2024, which resulted in the cancellation of over 5,000 Delta flights and cost the company more than $500 million. There has been no official statement from Delta on October 21, 2025, regarding the financial impact of this latest disruption, and no specific market reaction analysis is available yet.