A visualization showing just how thick air traffic is over Europe

Using real flight data from a single summer day, air traffic solutions company NATS has created a stunning and revealing data visualization showing just how incredibly busy the air traffic is above Europe at any given time.

The UK's Heathrow is the busiest international airport in Europe, while Gatwick is home to the busiest single runway airport in the world. Here's the visualization in all it's glory:

Find out more at nats.aero and nats.aero/blog.