World of Most Connected Cities by Air
The map shows the most connected cities in terms of the number of air routes that arrive in or depart from the city on a world-map scale. The size of a cityâ€™s name is proportional to its air route number. If a country has more than one city in the list, its cities are displayed in the same group of color. Cities in different countries are displayed in different groups of colors.
In the histogram, the heights above ground of the airplane represent the air route numbers of the corresponding