The carrier blamed the computer problem on a power outage in its hub in Atlanta, Georgia. Flights resumed but on a limited basis, and Delta warned the ripple effect of the computer breakdown would drag on. And in mid-August 2015, a computer problem at a regional air traffic control center delayed hundreds of flights at busy US east coast airports―including those in the Washington and New York areas―for several hours. Lines of passengers backed up at Delta ticket counters at US airports. As compensation, Delta offered refunds to travelers whose flights were cancelled or significantly delayed.

Source: The Standard August 09, 2016 09:33 UTC