The Climate Change Committee released new guidance on aviation policy, indicating that emissions from flying in the UK are projected to reach 38 million tonnes of CO2 equivalent by 2050 even without airport expansion. This would represent the largest remaining source of emissions as other economic sectors reduce their carbon footprint. Passenger numbers and flight volumes have driven aviation emissions to more than double since 1990, contrasting sharply with declining emissions across other industries.
The government has expressed support for expanding Heathrow Airport while expecting technological solutions such as sustainable aviation fuels to address emissions concerns. However, the Climate Change Committee concluded that current policies are insufficient to manage aviation’s carbon output. The committee stated that expanding Heathrow would contribute an additional 2.4 million tonnes of CO2 by 2050, representing roughly 5% of total UK emissions. A final decision on Heathrow expansion is anticipated by 2029.
The committee emphasized that the aviation sector itself must bear responsibility for its emissions through a “polluter pays” approach rather than relying on public funding. This would require airlines to finance sustainable aviation fuels and carbon removal technologies such as direct air carbon capture and storage. The committee acknowledged that assigning these costs to the aviation industry would likely increase ticket prices substantially, estimating increases of approximately £150 for European flights and £400 for transatlantic routes by 2050 in current prices.
The previous government’s “jet-zero strategy” from 2022 established emissions reduction targets, but the current Labour government determined those expectations for sustainable fuels, electric aircraft, and efficiency gains were unrealistic. The committee recommended that a revised aviation strategy be completed in 2027 to establish a credible framework for achieving net-zero emissions, after which Heathrow expansion could potentially be reconciled with climate targets.
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