Editor's note: Airlines have canceled more than 6,000 flights to, from or within the U.S. on Friday and Saturday due to the winter storm hitting the East Coast, The Associated Press reports. Most of Friday's cancellations are in Charlotte and Raleigh, NC. On Saturday, most cancellations are in Philadelphia, Washington and New York. Airlines have said they hope to resume flights Sunday, when blizzard warnings are set to expire. - Stephanie
FAA to investigate American Airlines flight 669's declared emergency landing in Philadelphia; flight, bound for Seattle, reported engine-related problem shortly after taking off from Philadelphia International Airport - @DavidSpuntCBS3
Philadelphia International Airport (IATA: PHL, ICAO: KPHL, FAA LID: PHL), often referred to just by its IATA code PHL, is a major airport in Philadelphia, Pennsylvania, United States, and is the largest airport in the Delaware Valley region and in the state. The airport is a major international hub for American Airlines and a regional cargo hub for UPS Airlines. The airport has service to destinations in the United States, Canada, the Caribbean, Latin America, Europe and the Middle East. Most of the airport property is located in Philadelphia proper. The international terminal and the western end of the airfield are located in Tinicum Township, Delaware County.