About 1,000 people were evacuated from 757 rooms in the 26-story Center City hotel as a precautionary measure.
Investigators tracked down the problem and cleared the smoke from the area with large fans.
According to the fire department, a fire has broken out at 3400 Spruce Street In Philadelphia.
When it comes to pipe and cigar smoking, a significant number of people believe there are no risks. They’re wrong.
Airport spokeswoman Victoria Lupica says a United Airlines flight bound for Cleveland reported a smell of smoke shortly after takeoff and returned to the airport just before 6:30 a.m.
A US Airways flight from Philadelphia to Albany, N.Y. landed safely after the crew reported smoke in the cockpit.