Moving air traffic controllers means retraining them on the quirks of a new facility, and the process can take years.

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,

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.

The delays continued at Newark Liberty International Airport on Monday evening with average backups of more than 1 1/2 hours.

Newark Airport reportedly experienced another outage Sunday, resulting in a temporary ground stop at the facility. Newark has been besieged with problems over the last few weeks, including multiple air traffic control equipment outages and widespread delays and cancellations of flights.

With summer travel season approaching, the crisis at the New Jersey airport could mean weeks, if not months, of misery for travelers.

Newark airport's been plagued with issues that have travelers like me concerned about safety. It's not dangerous, but delays are a bigger concern.

Tech chaos at Newark Liberty airport saw a spike in cancellations and delays in recent weeks, disrupting one of the busiest airports in the United States.