Why does my flight say below average CO2?

Why some flights have lower emissions. Carbon emission estimates consider the origin, destination, aircraft type, and the number of seats in each seating class. Factors such as fuel-efficient aircraft and shorter routes usually result in lower carbon emissions.



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Just exactly how bad is flying really? Air travel accounts for 2.5% of global carbon emissions. In the US, flying accounted for 8% of transportation emissions, but less than 3% of total carbon emissions.

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For example, a study by the University of Michigan Transportation Research Institute states the energy intensity of car transportation is on average 57% higher than air transports. In other words, a car emits more CO2 than the average planes because they consume more energy to transport the same amount of passengers.

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That is equal to 10% reduction in all greenhouse gases produced by a typical two-adult, two-car household. By eliminating one car and taking public transportation instead of driving, a saving of 30% of carbon dioxide emissions can be realized.

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In fact, unless you're looking to venture from Los Altos to LA off-road through state parks the whole way—in a Hummer with Tonka-truck mud tires—driving is generally greener than flying.

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Aviation accounts for 2.5% of global CO2 emissions But the one that gets the most attention is its contribution via CO2 emissions. Most flights are powered by jet gasoline – although some partially run on biofuels – which is converted to CO2 when burned.

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