590 Airports Cut Emissions by 542,000 Tonnes in One Year

Airports around the world just proved that handling massive crowds and protecting the planet aren't mutually exclusive goals.

The latest Airport Carbon Accreditation report reveals that 590 airports spanning 91 countries have joined a program to actively measure and reduce their carbon emissions. Together, these airports serve 53.6% of global passenger traffic, meaning more than half of all air travelers worldwide now fly through facilities committed to climate action.

The results speak for themselves. Between May 2024 and May 2025, participating airports cut a combined 542,559 tonnes of CO2 emissions, an 8.1% reduction in their direct operational footprint.

During this reporting period, 104 airports signed up for the first time, showing growing momentum in aviation's environmental commitment. The program now covers airports of all sizes, from bustling international hubs to smaller regional facilities.

Twenty-one airports have reached the highest certification level, achieving net zero emissions for all activities under their direct control. These leaders have also pledged to eliminate indirect emissions by 2050, tackling everything from ground transportation to airport shops and restaurants.

Individual passenger impact dropped significantly too. Average emissions per passenger fell to 1.54 kilograms of CO2, a 30.6% decrease compared to the previous three-year average. Emissions per traffic unit dropped 26.8% to 1.34 kilograms.

The Ripple Effect

This progress extends far beyond airport property lines. When major transportation hubs commit to clean energy and efficient operations, it influences airlines, ground transportation companies, and the millions of businesses that depend on air travel.

Olivier Jankovec, Director General of ACI EUROPE, emphasized that airports recognize their future depends on sustainability. "Climate action is not just about efficiency but about future proofing connectivity and business sustainability," he said.

The Airport Carbon Accreditation program provides a recognized framework with seven certification levels, allowing airports to progress at their own pace while meeting internationally consistent standards. Whether a facility is just starting to track emissions or aiming for complete carbon neutrality, the program offers a clear roadmap forward.

As travel demand continues recovering and growing, these airports demonstrate that increased passenger numbers don't have to mean increased environmental harm. Progress and growth can happen together when the industry commits to meaningful change.