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Some stranded Delta fliers to get $200 travel voucher

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NEW YORK — It’s been more than 48 hours since Delta suffered a massive power outage that grounded all its planes Monday morning, but the travel nightmare isn’t over for some fliers.

Flight cancellations and delays are still plaguing the airline.

After canceling around 800 flights on Tuesday, Delta said it would start Wednesday with more than 150 canceled flights.

Travelers wait in line at the Delta check-in counter at LaGuardia Airport , August 8, 2016 in the Queens borough of New York City. Delta flights around the globe were grounded and delayed on Monday morning due to a system outage. (Photo by Drew Angerer/Getty Images)

Travelers wait in line at the Delta check-in counter at LaGuardia Airport , August 8, 2016 in the Queens borough of New York City. Delta flights around the globe were grounded and delayed on Monday morning due to a system outage. (Photo by Drew Angerer/Getty Images)

Passengers whose flights have been canceled or “significantly” delayed due to Monday’s glitch are entitled to a refund.

Fliers who were traveling Monday, Tuesday or Wednesday and want to rebook can do so without a fee as long as they depart on or before Sunday, August 21.

Anyone who rebooks for a flight that leaves after August 21 could end up paying any difference in fare, but won’t have to pay the change fee, which is normally $200 for U.S. travel.

Passengers whose flights are canceled or delayed more than three hours will also get a $200 travel voucher for future travel.

Delta didn’t say how it would define a “significant” delay. A spokesperson said passengers should reach out to reservations for more information. The number is (800) 221-1212.

The massive power outage started around 2:30am ET on Monday and left flight airport departure and arrival screens on the fritz. Some passengers were stuck on the tarmac.

The ground stop was lifted before 9:00 am ET on Monday, and some departures resumed, but Delta warned that cancellations and delays would continue.

— CNNMoney’s Chris Isidore contributed to this report.