Travelers on United Airlines Flight 990 from San Francisco to Paris experienced an unexpected detour when their Boeing 777-200 was diverted to Denver International Airport due to an engine issue. The incident,

United Airlines flights at Denver International Airport and other major American airports are grounded because of a “technology issue,” airlines officials said Wednesday night.

United Airlines said that they were experiencing a "technology issue" on Wednesday evening and that was leading to a stoppage or delay of flights headed to Denver International Airport and other U.S.