"Frequent-flying 'super emitters' are just 1% of the world but caused half of aviation’s carbon emissions in 2018."

"Air travel is a uniquely damaging behaviour, resulting in more emissions per hour than any other activity, bar starting forest fires."

https://www.theguardian.com/world/2021/mar/31/elite-minority-frequent-flyers-aviation-climate-damage-flights-environmental