For years, the shortage of certified air traffic controllers in the US has led to flight disruptions and headaches for travelers across the country, most recently at busy Newark Liberty International Airport in New Jersey,

Newark Airport continues to face major delays and cancellations Sunday, with more than 500 flights impacted. By early evening, the airport reported 423 delays and 138 cancellations. On average, arriving flights are delayed up to four hours,

Passengers with flights to or from Newark Liberty International Airport are encountering long delays and cancellations due to an air traffic controller shortage and equipment failures.