Published Date: October 30, 2025
Why the Expansion Is Needed
Suvarnabhumi Airport has been operating close to its capacity limits as passenger numbers surge following the recovery of global tourism. The airport’s facilities, especially the main terminal, are facing increased pressure due to higher traffic volumes. In response, AOT has introduced a long-term master plan aimed at boosting both passenger capacity and operational efficiency.
Major Developments in the Project
Two major components define this new development phase:
The New South Terminal – This large-scale project is expected to handle between 55 and 70 million additional passengers per year, effectively doubling the airport’s total capacity. Once completed, it will ease congestion across the main terminal and streamline passenger movement throughout the airport.
The Fourth Runway – Alongside the terminal expansion, Suvarnabhumi will also gain a fourth runway to support increased flight operations. The upgrade will raise the airport’s handling capacity from about 94 flights per hour to 120 flights per hour, minimizing air traffic delays and allowing smoother peak-hour operations.
Progress and Projected Timeline
AOT is in the process of finalizing the master plan for both the South Terminal and the fourth runway. Following government approval, the construction bidding phase is expected to begin in early 2027.
The South Terminal is projected to take around 4.5 years to complete, while the fourth runway could be finished within four years. These upgrades will be complemented by additional projects such as the East Expansion and new cargo facility developments.
A Vision for the Future
Once all expansion phases are completed, Suvarnabhumi Airport aims to handle over 120 million passengers annually, reinforcing its position as one of Southeast Asia’s busiest and most advanced international gateways. This ambitious plan represents Thailand’s long-term commitment to enhancing air connectivity, boosting economic growth, and making Bangkok a true global aviation hub.