Over 2,000 U.S. flights are canceled due to the storm, and Delta experiences a slide-evacuation at Atlanta.

• Over 4,000 U.S. flights were either canceled or delayed.
• A massive winter storm snarled travel across the Southern U.S.
• Passengers on a Delta flight were evacuated via slides at Atlanta's airport after the plane aborted takeoff, causing further disruptions to airport operations.

Over 2,000 flights were canceled and another 2,000 were delayed on Friday due to a severe winter storm that disrupted travel in the Southern U.S.

An engine issue on a 757-300 aircraft caused operations to be further disrupted at Hartsfield-Jackson Atlanta International Airport, Delta's main hub and the world's busiest airport, resulting in the evacuation of 201 passengers and seven crew members on emergency slides.

"Delta's flight crew followed established procedures to halt the departure of flight 2668 from Atlanta (ATL) to Minneapolis-St. Paul (MSP) due to an engine issue indication. Delta stated that the safety of their crew and customers is their top priority and they deeply apologize for the inconvenience caused. They are currently working to assist their customers and ensure their safe and prompt arrival at their destinations."

Over 900 flights to and from Atlanta were canceled or delayed, accounting for about 40% of the day's schedule, according to FlightAware. The airport implemented a groundstop to prevent the facility from being overwhelmed with planes.

The two airports of Dallas/Fort Worth International Airport and Charlotte Douglas International Airport were heavily impacted by the storm, resulting in over 1,000 flight cancellations.

Because of the storm, Delta and other carriers waived change fees and fare differences.