United Airlines Flights status: What is current situation for domestic, international flights?

In August, a glitch forced United Airlines to ground flights across major U.S. airports including Newark, Denver, Houston and Chicago.
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United Airlines suffers system outage, causing flight disruptions. What airline is saying

A United Airlines system outage is causing flight disruptions at Newark Liberty International Airport and other airports nationwide on the evening of Aug. 6 with some travelers delayed for hours. "Due ...