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,

Delays persisted Saturday at Newark Liberty International Airport. They come a day after United Airlines announced they'd be cutting back flights at the airport​ due to persistent equipment and staffing issues.

United Airlines says its forced to cancel 35 daily flights from Newark due to staffing and technology issues at the airport, a major hub.