Airport Spillover Effect: How European cross-regional cooperation is reshaping the long-term strategic landscape of urban economic growth

In the grand narrative of contemporary global urban competition, the "spillover effect" of regional economies is no longer a simple spatial overlay but has evolved into a structural strategic asset. With the deepening of globalization and the solidification of regional economic islands, how to activate key urban nodes—such as airports—to maximize the economic potential of their surrounding areas has become a core issue for the long-term survival and competitiveness of cities.

The airLED (Airport Local Economic Development) cooperation project launched in Europe is a vivid illustration of this contemporary issue. This project brings together four economically relatively independent regions—Hungary, Italy, Poland, and Slovenia—aiming to transcend single-region perspectives and establish a cross-regional collaboration framework centered on an "airport city network." Its core logic is not merely the optimization of infrastructure but the systematic deconstruction and reconstruction of regional spatial, environmental, economic, and architectural characteristics.

The strategic value of this cooperation model lies in its ability to elevate the airport from a mere transportation hub to a "catalyst" for regional economic vitality. The research not only focuses on the direct impact of the airport on surrounding areas but also delves into how spatial layout, ecological environment, and architectural forms interact synergistically to ultimately determine the long-term development path of the regional economy. This reflects a profound shift in urban strategic thinking from a "point" to a "network": coordinated planning between regions is far more strategically penetrating than isolated local decisions.

The practice of airLED reveals innovative pathways in urban governance models. By collaborating with Regional Development Coordination Bodies (RDCB) and Assessment Support Groups (ASG), the project attempts to build a set of sustainable airport city development reports and, through agile mechanisms like the "Open Living Lab" (OLL), transform theoretical analysis into implementable regional development strategies. This indicates that in the complex arena of regional economic competition, the systematic transfer of knowledge sharing and best practices is the key path to achieving resilient regional economic growth.

Viewing it from a broader perspective of urban civilization evolution, the concept of the "new airport city" advocated by airLED suggests a paradigm shift in urban spatial governance. It foreshadows that the focus of future urban competition will shift from mere physical expansion to the construction of "functional networks." Investors and local governments will no longer focus solely on the return on investment of a single project but will seek mechanisms for capturing value within a larger, more resilient regional economic ecosystem. This joint incentive design for the "economic zone" is essentially reshaping the relationship between cities and capital, attempting to guide capital flow towards regions with higher socio-economic return potential through institutional design.

However, this cross-regional collaboration is not without challenges.However, this cross-regional collaboration is not without challenges. It requires participants to reach a high degree of political consensus on issues of sovereignty, governance standards, and economic incentive mechanisms. In the context of highly integrated Europe, balancing national-level macro-planning with regional agile innovation is a continuous tension. The long-term success of airLED will depend on its ability, through continuous open experimentation, to provide replicable solutions to deep structural issues concerning future urban space, climate resilience, and even regional governance. It challenges the traditionally state-led urban planning model, pushing urban governance towards a more collaborative network structure that emphasizes both ecological and economic values.