Dhaka, Feb. 4 -- Chicago - O'Hare International Airport's Terminal 5 now has more space to accommodate planes and passengers after 10 new gates opened for airlines' use.

The new gates entering service mark the completion of a key piece of the revamp of the former international terminal, which has been under construction about four years. Additional work remains underway at the terminal and other major work is planned as part of a broader overhaul of the airport, including eventually tearing down Terminal 2 and replacing it with a new Global Terminal and two satellite concourses.

The $1.3 billion renovation of Terminal 5, designed by firms HOK and Muller & Muller Ltd., was set to expand the terminal by 350,000 square feet, add passenger ...