United Airlines suffered a major "technology disruption" on Wednesday night, the carrier has told Newsweek via email, leading to widespread travel chaos in the United States and beyond, and it later warned of "residual delays" even though the underlying issue had been resolved.

An undisclosed “technology issue” delayed more than 1,000 United Airlines flights across the U.S. United Airlines said in a statement Wednesday that flights on major routes were held at their departure airports because of a technology issue.