United Airlines announced they will honor the free flights that were accidentally sold due to an error that occurred on the United Airlines website Thursday.

"We've reviewed the error that occurred yesterday and based on these specific circumstances, we will honor the tickets," United tweeted today on its Twitter account.

An unknown number of United Airlines customers purchased flight tickets for practically nothing Thursday after a computer glitch caused some fares to show up online for anywhere from $10 to $0, ABC News reports.

"One of our filings today contained an error which resulted in certain fares displaying as zero," said United spokeswoman Megan McCarthy, USA Today reports. "We have corrected this error."

A spokeswoman for the Chicago-based company told the Associated Press the error was not a website malfunction but a human error in filing the fares, ABC News reports.

The airline does not know how many of the bargain-priced tickets were sold.

The airline said it temporarily shut down its website and stopped booking flights through its phone center for approximately two hours before resuming operations after the error was fixed, Reuters reports.

Nancy Ilk, a consultant who flies often from Blooming Prairie, Minn., told USA Today she got one of the tickets for $10 to fly from Minneapolis to Houston and Washington's Reagan National and back in October. The $10 was noted as a September 11 security fee.

Some forum readers reported finding $10 flights between Washington DC and Hawaii, Forbes reports.