City in the Sky

What does it take to keep a million people airborne at 30,000 feet across the globe?


  • Airborne

    We take it for granted, but on any journey a hidden army of people keep your plane safe.
  • Departure

    What does it take to get 100,000 flights a day ready for take-off and up into the sky?

About City in the Sky

At any one time, there are a million people airborne somewhere in the world. That equates to an entire airborne city - a city in the sky. So what does it take to run a "city" at 30,000 feet? In this series, we set off around the world to uncover the invisible global networks and complex logistics that make it all possible.