An error on Delta Air Lines' website produced super low fares Thursday morning before the problem was corrected a couple of hours later.
The fares were as much as 90% below regular ticket prices. Delta passengers who took advantage of the mistake said on social media sites that they had booked such deals as $51 for a one-way ticket from Minneapolis to Baton Rouge, La., and $35 from Raleigh, N.C., to Philadelphia, about one-tenth the normal price.
"The situation has been resolved and the correct prices are being displayed," said airline spokesman Trebor Banstetter.
Delta is the second airline to feel the sting of a problem with its booking website this year. In September, United Airlines blamed a computing error that produced one-way fares as low as $2.50.
Delta said it will honor the super-cheap fares, just as United did. But some Delta passengers on the airline's Facebook page said the carrier refused to honor erroneously low fares they found on the website.
Delta officials said the airline would honor the ultra-cheap fares only for travelers who booked their flights before the prices were corrected.