CHICAGO (Reuters) -United Airlines is facing a financial hit and potential long-term reputational harm as flight delays and cancellations pile up due to ongoing disruptions at Newark airport - one of its largest hubs and among the busiest in the country.

Travel woes at Newark Airport continued Monday after a weekend featuring another radar outage, a ground stop and dozens of flight cancellations and delays. The FAA announced Newark was operating on a ground delay program,

Transportation Secretary Sean Duffy said Monday that “fast-track” fixes are being made to address the continuing communications and radar failures at Newark Liberty International Airport.

Transportation Secretary Sean Duffy says a new software update prevented a third radar outage over the last two weeks at New Jersey's busy Newark airport when a telecommunications line failed again over the weekend.

Democratic candidates for New Jersey governor sparred on the issues at a debate Monday night. In a debate hosted by NJ PBS and WNYC, Newark Mayor Ras Baraka, Jersey City Steve Fulop, Rep. Josh Gottheimer,

Sunday's incident marks the fourth time in the past two weeks that technical problems have disrupted air traffic at Newark.

More than 450 flights were delayed Monday causing chaos at Newark and Atlanta international airports following the weekend’s ground stop order over air traffic control failures. The Federal Aviation Administration (FAA) issued a warning that a second ground stop order was possible given the situation at Hartsfield-Jackson Atlanta International — the busiest airport in the US — which has seen more than 370 delays as of Monday afternoon,