Istanbul has officially inaugurated the final segment of the M11 metro line, marking the completion of a major infrastructure project connecting Istanbul Airport (IST) with the Halkalı district. This strategic expansion extends the high-speed transit corridor to a total length of 69 kilometers, significantly improving accessibility between the city's primary international aviation hub and the European side’s southern transport nodes. To celebrate the opening, municipal authorities have announced that travel across the newly launched section will remain free of charge until July 31, 2026.
New Stations and Enhanced Transit Connectivity
The final phase of the M11 project introduces five critical stations to the network: Fenertepe, Şehir Hastanesi, Kayaşehir, Olimpiyatköy, and Halkalı. This extension transforms the line into a backbone for urban mobility, offering seamless integration with other vital rail systems. Travelers can now benefit from transfers to:
- Integrated connections with the Marmaray commuter rail line at Halkalı.
- Interchanges with the M2 (Yenikapı–Hacıosman) line at Gayrettepe.
- Access to the M3 (Kirazlı–Kayaşehir) and M9 (Ataköy–Olimpiyat) lines.
The integration with the Marmaray is particularly significant as it allows passengers to travel from the airport to the Asian side of Istanbul with a single transfer.
Travel Times and International Rail Links
The technical specifications of the M11 line prioritize speed, making it one of the fastest metro systems in Europe. Commuters traveling from Halkalı to Istanbul Airport can expect a transit time of approximately 30 minutes. Furthermore, the journey from the southern terminus at Halkalı to the business district of Gayrettepe is scheduled to take 57 minutes. Beyond local transit, Halkalı Station serves as the primary gateway for international rail travel, hosting departures for long-distance trains bound for Sofia (Bulgaria) and Bucharest (Romania).
The completion of the M11 line represents a milestone in Istanbul's urban planning, effectively linking the city’s largest airport to its international rail network. By reducing reliance on road transport and shortening commute times, the project enhances the logistical efficiency for both international tourists and local residents. As of June 19, 2026, the full line is operational, providing a reliable and cost-effective alternative for navigating the metropolis.