Capacity-demand balance It indicates how well an airport can accommodate the desired level of traffic, and how much congestion, delay or inefficiency it may experience. A positive balance means that the airport has excess capacity, and can handle more traffic without compromising the quality of service.

Airport capacity is a critical metric in 2026 because it acts as the "bottleneck" or the "engine" for global economic growth and regional connectivity. Capacity refers to the maximum number of aircraft movements (take-offs and landings) and passengers a facility can safely handle within a given timeframe. It is important because oversaturated capacity leads to chronic flight delays, increased carbon emissions from planes circling in "holding patterns," and a poor passenger experience characterized by long security lines and crowded gates. From an economic perspective, sufficient capacity allows for new flight routes, which lowers airfares through competition and facilitates international trade and tourism. In 2026, capacity is no longer just about "more runways"; it is about "digital capacity," using AI and 5G to optimize taxiing times and gate turnarounds. If an airport reaches its physical capacity limit, it can stifle the growth of its home city, as businesses may relocate to hubs with better global accessibility. Therefore, airport expansion and modernization are strategic national priorities, balancing the need for mobility with the environmental challenges of managing a high-volume transport infrastructure in a sustainable way.