The reserving capabilities of the airline web site have been restored after an issue with the Google software program

Travelers wearing protective masks walk past a sign pointing to a Covid-19 test site in Terminal 5 of John F. Kennedy International Airport (JFK) in New York on March 26, 2021.

Angus Mordant | Bloomberg | Getty Images

Several major airline sites were temporarily down on Monday due to an issue with the Google software that provides price and flight information for those sites.

American Airlines, Delta Air Lines, and United Airlines websites displayed error messages when users searched for flights on Monday afternoon but operated normally after about two hours.

“Earlier today, a data error had an impact on our flight purchasing software, preventing both airline partners and Google Flights from displaying fare information,” said a statement from Google. “We implemented a fix and the problem has now been resolved. We will continue to monitor to make sure this is fully resolved.”

“Delta.com and the Fly Delta app are functioning normally after an issue this afternoon that made it difficult for customers to purchase flights through delta.com, the Fly Delta app and our reservations call center,” it said in a statement from Delta. “The problem was caused by the failure of technology provided to Delta and several airlines by Google. We apologize for the inconvenience this caused.”