Calculating the detrimental costs of air travel is more complex then just fuel burn due to altitude and types of emissions produced: https://en.wikipedia.org/wi

Calculating the detrimental costs of air travel is more complex then just fuel burn due to altitude and types of emissions produced: https://en.wikipedia.org/wiki/Environmental_impact_of_aviation#Mechanisms_and_cumulative_effects_of_aviation_on_climate https://en.wikipedia.org/wiki/Environmental_impact_of_aviati...