Delta Air Lines (NYSE: DAL) will provide $200 in travel vouchers to all customers who experienced a delay of greater than three hours or a cancelled flight as a result of today’s systemwide outage.

The vouchers are available for travel on all Delta and Delta Connection-operated flights.

“We know that travelers value our commitment to excellent operational performance, and today we did not deliver on that commitment,” said Gil West, Delta’s Senior Executive Vice President and Chief Operating Officer. “We want our customers to know we are thoroughly investigating the matter and that we are truly sorry.”

Delta cancelled hundreds of flights and hundreds more were delayed as it worked to reset its operation following a loss of power in Atlanta that impacted Delta computer systems and operations worldwide. Systems are fully operational and flights resumed hours ago but delays and cancellations remain as recovery efforts continue.

Customers impacted by the outage and who have provided their email address will be contacted today and will receive their voucher in 7-10 business days. Customers who have not been contacted can complete a Customer Care form on www.delta.com/wecare to receive their voucher. All travel must be booked by Aug. 8, 2017.

A travel waiver is in effect:

https://www.delta.com/content/www/en_US/traveling-with-us/advisories/system-outage.html.

Delta Air Lines serves nearly 180 million customers each year. In 2016, Delta was named to Fortune’s top 50 Most Admired Companies in addition to being named the most admired airline for the fifth time in six years. Additionally, Delta has ranked No.1 in the Business Travel News Annual Airline survey for an unprecedented five consecutive years. With an industry-leading global network, Delta and the Delta Connection carriers offer service to 335 destinations in 61 countries on six continents. Headquartered in Atlanta, Delta employs more than 80,000 employees worldwide and operates a mainline fleet of more than 800 aircraft. The airline is a founding member of the SkyTeam global alliance and participates in the industry’s leading transatlantic joint venture with Air France-KLM and Alitalia as well as a joint venture with Virgin Atlantic. Including its worldwide alliance partners, Delta offers customers more than 15,000 daily flights, with key hubs and markets including Amsterdam, Atlanta, Boston, Detroit, Los Angeles, Minneapolis/St. Paul, New York-JFK and LaGuardia, London-Heathrow, Paris-Charles de Gaulle, Salt Lake City, Seattle and Tokyo-Narita. Delta has invested billions of dollars in airport facilities, global products and services, and technology to enhance the customer experience in the air and on the ground. Additional information is available on the Delta News Hub, as well as delta.com, Twitter @DeltaNewsHub, Google.com/+Delta, and Facebook.com/delta.