Changing Flight Paths Could Slash Aviation's Climate Impact

Airlines could cut climate impact fast by avoiding contrails

New study shows that planes can reduce warming by slightly changing altitude to avoid contrails. This simple step works fast.

Changing flight paths could slash aviation's climate impact

Small changes to aircraft flight paths to avoid the atmospheric conditions that create condensation trails—known as contrails—could reduce aviation's global warming impact by nearly half, a new study suggests. The study, led by researchers at the University of Cambridge, suggests that changing cruising altitude by a few thousand feet, either up or down, could prevent contrails from forming. Reducing or avoiding contrail formation in this way wou…

Changing flight paths could slash aviation’s climate impact

18.03.2026 - Small changes to aircraft flight paths to avoid the atmospheric conditions that create condensation trails - known as contrails - could reduce aviation's global warming impact by nearly half, a new study suggests.

How can flight paths cut contrail warming?

Small routing changes can reduce contrail related warming Condensation trails form when aircraft exhaust meets cold, humid pockets of the upper atmosphere. Under the right conditions those trails persist and spread, forming high, thin clouds that trap outgoing heat and add to aviation’s climate…