A fire alarm at ' Chicago operations center triggered a brief nationwide ground stop, with employees temporarily moving to a ...

The major airline has grounded its entire fleet just days after a similar ground stop sparked mass travel chaos across the ...

United Airlines grounded all US flights on July 24, 2025, after a fire alarm at its Willis Tower HQ in Chicago. Service ...

United Airlines has been forced to ground their entire fleet due to a fire alarm at their operations centre. The world's largest airline has said "flights may be temporarily delayed", and is ...