WAIS INSIGHTS
Perspectives on the global aviation system.
WAIS Insights present data-driven analysis of airports, airlines, traffic and aviation geography. Explore rankings, global patterns and the structures shaping the world’s aviation system.
FEATURED INSIGHTS
AIRPORT RANKINGS · 2025
The World’s 100 Busiest Airports in 2025
The world’s largest airports handled an extraordinary concentration of global passenger traffic in 2025. The WAIS Top 100 accounted for 4.94 billion passenger movements.
AVIATION GEOGRAPHY · 2025
The Geography of Global Airport Traffic in 2025
How 9.52 billion passenger movements are distributed across 951 airports and 11 world regions.
AIRPORT SYSTEMS · 2025
The World’s Largest Multi-Airport Systems in 2025
A comparison of the world’s largest metropolitan airport systems and the multiple airports through which they organize passenger traffic.
LATEST INSIGHTS
AVIATION GEOGRAPHY · 2025
The World’s Largest Airport Markets: Countries in 2025
How passenger traffic is distributed among the world’s largest national airport markets.
AIRPORT RANKINGS · 2025
Megahubs: Airports Handling More Than 50 Million Passengers
The 43 airports that form the uppermost passenger-traffic tier of the global airport system.
AVIATION GEOGRAPHY · 2025
One Million Passengers: Mapping the World’s Major Airports
The global geography of the 951 airports handling at least one million passengers in 2025.
MORE INSIGHTS
AIRPORT SYSTEMS
One City, Many Airports: How Multi-Airport Systems Work
Why major metropolitan aviation markets are often organized through multiple airports — and how WAIS identifies their different roles within a single airport system.
AIRPORT CLASSIFICATION
Beyond Size: Why Airports Need Functional Classification
Passenger traffic measures airport scale, but not airport function. The WAIS classification framework identifies the different roles airports perform within the aviation system.
