Philadelphia International Airport, also known as PHL, offers a range of transportation solutions. The airport is one of the largest economic engines in Pennsylvania. It generates more than $13 billion annually, as well as over 41,000 jobs. The airport spreads across an area of nearly 2,300 acres. It features runways and approximately five terminals. Philadelphia International Airport accommodates up to 31 million passengers annually. The airport operates a range of food, beverage and retail programs. It offers exhibitions and concession programs, as well as online flight information. The airport is served by Delta Air Lines and Continental Airlines. Philadelphia International Airport is owned and operated by the city of Philadelphia.