India, Aug. 7 -- A system-wide outage at United Airlines is causing significant disruptions to flight operations, with widespread delays reported across the country. According to outage tracking site DownDetector, reports of the issue peaked around 8 p.m. EDT on Wednesday.

Passengers took to social media to share their frustrations as flights were grounded and operations halted at major airports.

One person reported, "Stuck on the tarmac in New Orleans thanks 2 a United system outage. 0 planes moving. No weight & balance data. Just vibes. Hearing the same from IAH, DFW, Detroit, and DEN. United needs a reset button."

Another wrote, "System-wide outage, all United Airlines planes grounded. Sitting on the plane.they have given us the opt...