By Kate Samuelson
Updated: August 9, 2016 4:25 PM ET

Following Monday’s cancellation of hundreds of flights and the delay of thousands more, Delta Airlines has announced that about 530 more flights are to be scrapped Tuesday.

The chaos was sparked by a power outage in Atlanta early Monday morning, which affected the airline’s computer systems worldwide.

Although Delta was back online after just a few hours, the outages were so widespread that it is still having to deal with the ripple effects a day later, ABC News reports.

The airline is offering waivers for customers affected by the delays, traveling on August 8 through the 10th. The rebooked flights must take off by the 21st, per Delta’s website, for customers to receive the same fare they already paid. Delta’s website says that the company will waive the rescheduling fee even if the new flight occurs after the 21st.

Refunds and $200 in travel vouchers are also offered to people whose flights were canceled or delayed at least three hours.

Delta posted a video apology by CEO Ed Bastian on Twitter yesterday, in which he said: “I apologise for the challenges this has created for you with your travel experience. The Delta team is working very, very hard to restore and get these systems back as quickly as possible.”

Write to Kate Samuelson at kate.samuelson@time.com.

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