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.