Airlines test contrail avoidance to cut climate impact: cheaper than sustainable fuel

A new Marketplace article reports that airlines are testing AI-driven flight path adjustments to avoid creating persistent contrails, which account for 1-2% of human-caused global warming. Trials by American Airlines, Contrails.org, and Google showed a 62% reduction in contrail formation with minimal fuel cost increase. Researchers estimate the cost of this mitigation at roughly $5 per ton of carbon abated, far cheaper than sustainable aviation fuel which can cost $200-$400 per ton. The article notes that American paused its trials this year due to rising jet fuel prices from geopolitical tensions. However, the European Union now requires airlines to monitor and report non-CO2 climate impacts, which could push more carriers to adopt contrail management. The piece highlights that pilots already make similar altitude adjustments for turbulence or wind, so the operational change is relatively small.