United Airlines is letting customers change flights for free as flight delays and cancellations continue to grow at Newark Liberty International Airport in New Jersey.

The shortage on Monday forced the F.A.A. to delay flights to the busy airport for up to nearly seven hours, the latest problem to plague the airport.

Tech outages at Newark Liberty International Airport have led to a slew of delays and cancellations. Here's how your travel could be affected.

The airline told the Sun the e-mail was sent to passengers who have upcoming flights to or through Newark’s airport, as well as its MileagePlus

We have to fix this, because what you see in Newark will happen in other places across the country,” a top federal official said.