London leads as the busiest multi-airport city system, outpacing even New York’s vast network.
Hartsfield–Jackson Atlanta International Airport (ATL) remains the world’s busiest single-airport hub.
Why These Airspaces Are So Busy
According to aviationa2z, economic concentration draws airlines (e.g., British Airways- BA; Delta Air Lines– DL; Emirates– EK) to key city pairs.
READ: Aviation: East Asia and the Middle East Emerge as New Aviation Hubs While the US Dominates in Airport Numbers
Short distances between urban centers in Europe and North America amplify frequency and volume.
Diverse flight connections, from regional to long-haul, funnel through these hubs, driving transit numbers higher.
Managing Congestion
Real-time flight tracking and predictive tools, like NASA’s FACET program, help controllers efficiently route aircraft and avoid gridlock.
Rerouting to avoid conflict zones impacts available skyways, intensifying traffic on select lanes.
