The agreement does not include building a controversial fifth runway on the river and displacing United Parcel Service from 212 acres it owns.
The city and US Airways, in a joint statement, said they had agreed to:
Lengthen a main east-west runway by 1,500 feet, from 10,500 to 12,000 feet, to accommodate large, long-haul aircraft capable of flying anywhere in the world.
Redesign the Terminal B and C ticketing areas, with new, automated baggage handling and screening and a centralized, spacious passenger-security checkpoint.
Replace current rental-car surface lots with a multistory, consolidated rental-car building.
Design an automated "people mover" train between the concourses, making it easier for passengers to connect to flights.
Improve taxiway and aircraft-holding areas on the airfield to queue planes better for departure.


Make security upgrades, roof and window replacements, and improvements to escalators, restrooms, roadways, concessions, and flight-information displays.
"This agreement facilitates the continuation of our partnership to move forward with the projects that are crucial to the airport and the region," Mayor Nutter said.
The statement said the projects would positively affect the region's economy and create jobs and construction opportunities.