Leeds Bradford Airport (LBA) has pledged to become one of the first carbon neutral airports in the UK by 2030.
Airport bosses plan to "decarbonise" terminal operations and convert on-site vehicles to low or zero emissions to achieve their "net zero" target.
Critics say the move, though welcome, is a "grain of sand" compared to the emissions produced by aircraft at LBA.
LBA said it had already achieved a 48% reduction in CO2 emissions since 2015.
Airport CEO Vincent Hodder said: "This net zero commitment is one of the most ambitious made by a UK airport.