Map of national air routes (2021) - Milhaud maps

This map, created by the user of Reddit phaj19 in 2021, shows all the national air routes of the world, according to OpenFlights data. The author represents with straight lines, of different color for each country, all the national flights of the world. Attention is drawn to the high density of countries such as China and the United States, where the lines form polygons with which they fail to appreciate the lines themselves. Likewise, a high po…