In addition to all air traffic coming to a halt in Atlanta, the Federal Aviation Administration enacted a ground stop for all flights headed to Atlanta, meaning that they will not be allowed to take off until the stop is lifted. Only a handful of flights have been canceled for Monday morning.
Airlines had canceled 1,173 flights to or from the Atlanta airport as of 10:55 p.m., according to flight-tracking site FlightAware. Many passengers were forced to sleep at the airport as officials worked to resolve the power issues.
Delta hopes to return to normal service by the afternoon, but some of the fliers we talked with said they couldn't get a flight out of Atlanta until Tuesday.
Inside the airport, the outage cut power in the terminals, leaving passengers stranded in the dark as they stood in line at gates and security checkpoints.
Reed emphasized that officials' focus is on safety and security, and reiterated Georgia Power's earlier statement that all power should be restored by midnight Sunday.
"There are just so few seats available during a peak holiday week, that's just going to take a lot of flights with four or five seats apiece", Mann said. They began work at around 3 p.m.to get the power up and running.
Georgia Power CEO Paul Bowers issued an apology and blamed the fire on a failure in a switch gear. "We are stuck here", she said.
"Delta is aware of a power outage at the Atlanta Airport affecting airport concourses and terminal buildings", spokesman Michael Thomas told CNN. The airport could see a logjam of passengers and delays as more than 400 flights have been canceled Monday.More news: BCCI unofficially ushers in Big Four era with new FTP
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Delta Air Lines lost power in August 2016, causing more than 2,000 flight cancellations over several days.
Delta, which has its headquarters in Atlanta, canceled more than 900 flights Sunday.
There are reports from people at the airport that flights are delayed and inbound flights can not deplane due to lack of power in the jetways. The utility said that there are "many redundant systems in place" to ensure the power supply to the airport and that such outages at the airport "are very rare". At one point, there were at least 40 planes stuck on the runway and tarmac. The FAA said the tower could operate normally but flights were affected because airport equipment in the terminals was not working.
Klein and her fellow passengers would be stranded on the tarmac for upwards of 7 hours before being allowed to deplane.
Southwest, American and United airlines canceled operations in and out of Atlanta for the rest of Sunday.
The power outage has had a major impact at Raleigh-Durham International Airport as well - and not just for people flying to Atlanta.
Hartsfield-Jackson serves an average of 275,000 passengers a day.