Emissions from aviation are a significant contributor to climate change. Airplanes burn fossil fuel which not only releases CO2 emissions but also has strong warming non-CO2 effects due to nitrogen oxides (NOx), vapour trails and cloud formation triggered by the altitude at which aircraft operate. These non-CO2 effects contribute twice as much to global warming as aircraft CO2 and were responsible for two-thirds of aviation’s climate impact in 2018.
As it is currently difficult to reduce emissions from this sector, flying less is the only way to reduce emissions in the critical decade before 2030. Flying less could mean taking a more sustainable mode of transport, such as train, or changing your destination to one which can be reached by less climate-intensive means. It could also mean teleconferencing instead of attending business meetings, or going on longer individual holidays, rather than several short, carbon intensive, trips.