
iGA Istanbul Airport and Chicago O’Hare International Airport have formalized a Sister Airport agreement, uniting two of the world’s most prominent aviation hubs in a partnership designed to foster collaboration and innovation across multiple facets of airport operations. The agreement was signed during a ceremony at O’Hare’s Terminal 5 on June 20, 2025, attended by executives from both airports and Türkiye’s Consul General in Chicago, Tahir Bora Atatanır.
The partnership aims to facilitate joint projects in airport management, operations, customer service, planning, and sustainability, reflecting the shared commitment to advancing global connectivity and excellence in passenger experience.
Selahattin Bilgen, CEO of iGA Istanbul Airport, highlighted the strategic importance of this alliance for expanding iGA’s presence in North America and strengthening its global network. He noted that the cooperation is expected to yield mutual benefits in both passenger and cargo transportation, leveraging the airports’ roles as major international gateways.
iGA Istanbul Airport, ranked the seventh busiest in the world by passenger numbers in 2024 and the ninth by aircraft movements, serves as Türkiye’s largest airport and a major hub for Turkish Airlines, offering nonstop service to over 330 destinations—including 14 in the United States. Similarly, O’Hare is recognized as the best-connected airport in the United States and a critical hub for Star Alliance carriers.
The agreement is particularly significant given the strong business and cultural ties between Chicago and Istanbul. The Chicago metropolitan area is home to approximately 5,000 Turkish nationals, with over 20 Turkish investors and 12 Turkish firms operating in the city, while eight Chicago-based companies maintain a presence in Türkiye. This partnership is expected to further enhance trade, tourism, and cultural exchange between the two cities.
Michael J. McMurray, Commissioner of the Chicago Department of Aviation, emphasized that the Sister Airport agreement will elevate bilateral relations between the United States and Türkiye and help maintain Chicago’s status as a global transportation hub. The partnership is also supported by World Business Chicago, whose President & CEO, Phil Clement, underscored the unique position of Istanbul as a city bridging Europe and Asia, and the value of deepening international ties for Chicago’s diverse economy and global reach.
The Sister Airport agreement establishes joint working groups focused on sharing best practices in airport management, customer service, planning, operations, and sustainable development. This is iGA Istanbul Airport’s first such partnership in the Americas, complementing its existing alliances with major airports in Asia and Europe, including Incheon, Beijing, Shanghai, and Copenhagen.
For the Chicago Department of Aviation, this marks its tenth Sister Airport agreement, further expanding its international network.
Both airports anticipate that the collaboration will position them to capitalize on growing passenger and cargo volumes, reinforcing their roles as vital nodes in the global aviation network and setting a foundation for ongoing innovation and connectivity