New ‘Sister Airport’ for İGA Istanbul Airport: Sydney

iGA continues to enhance the range and quality of services offered at Istanbul Airport through strategic collaborations that also contribute to Türkiye’s touristic, commercial, and cultural advancement.

Strengthening its global connectivity and service excellence through international partnerships, iGA Istanbul Airport — the hub offering flights to the highest number of destinations worldwide — has signed a Sister Airport Agreement with Sydney Airport (SYD) in Australia.

This strategic cooperation aims to increase passenger and cargo traffic between the two airports, enhance air services, and jointly promote destinations. Within the scope of the partnership, both parties will collaborate on route development, mutual destination promotion, and information sharing.

Under the agreement:

• Annual management meetings will be held, with workshops or seminars organized when needed.
• Both sides will exchange non-commercially sensitive data and best practices to encourage knowledge sharing.
• The development of new and additional air services will be promoted.
• Joint marketing and promotional activities will be conducted to raise the visibility of Istanbul and Sydney as destinations.

The Sister Airport Agreement between iGA Istanbul Airport and Sydney Airport marks an important step supporting both airports’ shared vision for sustainable growth, passenger experience, and global connectivity.

The Agreement Strengthens Istanbul’s Global Standing

This partnership also reinforces Türkiye’s position in the Australian market, further strengthening tourism, trade, and cultural ties between Istanbul and Sydney.

Following the Sister Airport Agreement signed in June with Chicago O’Hare International Airport (CDA) in the United States, this new collaboration with Sydney Airport becomes the tenth such agreement within iGA Istanbul Airport’s international network.

iGA Istanbul Airport has also established Sister Airport partnerships with Seoul Incheon International Airport, Beijing Capital International Airport, Beijing Daxing International Airport, Shanghai Airport Authority, and Sichuan Provincial Airport Group, Copenhagen Airport, Airports of Thailand, and Airports Corporation of Vietnam.

According to the 2025 Airport Industry Connectivity Report published by ACI EUROPE, İGA Istanbul Airport has overtaken Frankfurt to become the world leader in the Global Hub Connectivity ranking. Maintaining its position as Europe’s most connected airport in both 2024 and 2025, iGA Istanbul Airport offers direct flights to over 330 destinations and serves more than 110 airlines — ranking among the top three airports globally with the highest number of airlines served.