Delta Air Lines announced large-scale flight cancellations Monday morning after a power outage at the airline's headquarters in Atlanta.
Thousands of travelers were prevented from flying while Delta sorted out the problem. After the nearly four-hour delay, the airline lifted its ground stop at 6:40 a.m. and resumed departures.
Delta customers headed to Denver International Airport or other airports are warned to expect delays and cancellations Monday. The airline is offering travel waivers so customers can make one-time schedule changes to their tickets without any fees.
At about 4:30 a.m., a power outage in Atlanta affected Delta computer systems and operations worldwide, resulting in flight delays. Planes traveling at the time of the outage were operating normally, according to Delta.
