At least prior to the restrictions on flights due to the COVID-19 pandemic, passenger and cargo flights were a growing source of greenhouse gas emissions and a driver of climate change.
While businesspeople, politicians, diplomats and the super rich led the pack, and still do even in a pandemic, professional sports teams and athletes, including Olympiads, also do a great deal of flying, much of it long-distance and international.
Furthermore, prior to the pandemic, tens of thousands of fans would fly around the world to watch their hometown teams or national teams in faraway places. Alternatively, they would fly to major sporting events, including the Olympic Games, the Commonwealth Games, the FIFA World Cup and the Australian Open.