The cross-country flight from San Diego landed at Philadelphia International Airport around 6:30 a.m. EST. Officials said 88 passengers and five crew members were aboard the flight. All were evacuated from the plane, according to MyFoxPhilly.com.
The threat was called into the Transportation Safety Administration as the plane was landed, police said.
All passengers were evacuated to a terminal and no injuries were reported. Investigators with service dogs searched the plane, but they did not find any threats, according to police.
There were reports of several bomb threats made against different flights across the United States Tuesday morning. It was unclear which flights had been threatened or if those threats were substantiated.