Another power outage at Philadelphia International Airport after it was restored

A power outage caused major issues at Philadelphia International Airport Saturday morning through the afternoon, then went out again on Sunday.

Sunday afternoon at approximately 2:30 p.m. power in Terminal D was lost again, impacting United, Delta, JetBlue, Air Canada and Alaska Air and Jet Blue boarding gates and ticketing check in desks, as well as baggage belts for United, Delta, Air Canada and Spirit, City of Philadelphia Department of Aviation Public Affairs Manager Heather Redfern said in a statement on Sunday.

The Terminal D electronic boards, concessions, and restrooms were also inoperable. No other terminals are impacted by the power outage and Terminal D departures and arrivals were assigned to gates in other terminals, Redfern said.

"The D/E TSA Checkpoint, Exit Lanes and Baggage Claim areas have power and are operational," Redfern said.

By 5 p.m. on Sunday no flights had been cancelled.

"Today’s outage occurred when the large generator used to resolve Saturday’s outage stopped working. Another generator is enroute and mechanical teams are onsite to install a new generator and bring power back online as quickly as possible this evening. The cause of the initial power outage remains under investigation," Redfern said.

In a social media post on Nov. 30, the airport said the outage had affected Terminal D and advised all United, Delta, JetBlue, Air Canada, and Alaska Air passengers to check with their airlines before heading to the airport.

"Power was restored to Terminal D at PHL at approximately 1:30 pm. Terminal gates and ticketing computers are operating and concessions are open," Redfern said in a statement on Saturday.

It is unclear what caused the outage, all other terminals had power.

Passengers react to PHL power outage

While the power was out, many fliers remained positive.

"Thanksgiving time of year is always expected to expect the unexpected," one passenger said.

Some families were stranded for hours, including James Coe and his children whose flights to Atlanta had been delayed since 8 a.m.

"It said two hours from now every hour for the last four hours," Coe explained to NBC10.

The chaos allegedly began Friday night around 9 p.m., according to some fliers.

“I left Los Angeles at 10 p.m., Derrick Rodgers said. "Our flight from Atlanta to Philadelphia was delayed by 3 hours."

Rodgers explained that his flight ended up landing at a different gate and baggage was scattered in different terminals.

“I am relieved to finally be here. And I only came here for two days and spent half my day at the airport," Shawna Rickards said.

The airport is still trying to pin down what caused the power outage.

PHL is urging all passengers to check on their flights as there could still be residual delays for the rest of the day.