NEWARK -- Power outages at a United Airlines control tower at Newark Liberty International Airport have delayed flights for about two hours Monday evening.
The Port Authority of New York and New Jersey says United's control tower at Terminal C suffered a power failure around 5 p.m. The power was restored briefly but failed again. It was restored again around 7 p.m.
Flights have resumed. Chicago-based United Airlines says there are no residual delays.
It's unclear what caused the power outages at Newark, where United has a hub.
United's parent company is United Continental Holdings Inc.
Several passengers tweeted complaints about being stranded at the airport and idling for hours.