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August 08, 2016

About 450 Delta flights around the world were cancelled or delayed following an outage at the company’s base in Atlanta on Monday.

In response, Delta has offered passengers waivers for flights scheduled through Friday, as well as $200 travel vouchers to passengers whose flights were canceled or delayed more than three hours.

The outage occurred around 2:30 a.m. ET. Flights that were already mid-air continued their routes, while those awaiting departure were either cancelled or significantly delayed. Flights on the ground were held at the gate.

As of 8:40 a.m. ET, the ground stop was lifted and limited departures resumed, however systems are still showing incorrect flight times. For travelers flying Delta on Monday or later in the week, there is a travel waiver in effect.

The power outage in Atlanta affected Delta’s computer systems worldwide, including flight status displays, airport software tools and the airline’s website and app.

Delta CEO Ed Bastian posted an apology and update to travelers on Monday:

The airline was scheduled to operate 3,300 flights today however the number of flights impacted by the outage could be much larger. Delta expects that cancellations and delays will continue throughout the week.

Delta passengers who booked flights through August 12 can claim a travel waiver on Delta’s website. The airline is waiving change fees for affected passengers.

And travelers should double-check flight status before leaving for the airport and be aware that wait times for service, both at the airport and on the phone, are expected to be much longer than usual.

Last month, Southwest’s computer system experienced a power outage that cancelled more than 1,000 flights

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