On June 28, 2023, United Airlines CEO Scott Kirby was among passengers in the more than 50,000 private jet flights in the U.S. that week. Kirby chose the Teterboro, New Jersey (KTEB) airport over Newark Airport (KEWR), the nearby United hub, for a flight to Denver, Colorado. If you’re wondering why Kirby couldn’t find an option among the air travel options offered by United – the third largest airline in the world by fleet size – it was likely because the airline canceled 750 flights on the same day.