United Airlines was forced to issue a nationwide ground stop for its entire fleet after a fire alarm sounded at its ...

"A fire alarm sounded at our operations center, which caused employees to move to our nearby backup facility and resulted in ...

Mainline United Airlines flights were briefly halted nationwide due to a fire alarm at a suburban Chicago facility on ...

United Airlines temporarily halted all mainline flights across the USA due to an emergency fire alarm at its Chicago-area ...

United Airlines temporarily grounded all mainline flights nationwide due to a fire alarm at its Chicago operations center, ...

United Airlines says a fire alarm at the company’s operations center led to a brief nationwide ground stop of all United ...

United Airlines faced a temporary disruption. A fire alarm at the Chicago operations center caused a nationwide ground stop.

The airline has warned that there may be ongoing disruptions to its operations throughout the night, raising concerns about ...