Wednesday, February 11, 2026 — London The UK Civil Aviation Authority (CAA) has issued updated guidance requiring airlines to provide clearer reporting on passenger flight emissions, marking a significant step in the government’s broader climate transparency efforts.
The revised framework aims to standardise how airlines calculate and disclose carbon emissions per passenger journey, allowing travellers to make more informed decisions.
The CAA said the guidance will improve consistency across the aviation sector and reduce discrepancies in environmental claims.
“Transparent reporting is essential to building trust with passengers and ensuring accountability,” a CAA official said.
The aviation industry has faced mounting pressure to address its environmental footprint as the UK works toward legally binding net-zero targets.
Airlines operating within the UK will be required to adopt uniform methodologies when presenting emissions data in marketing materials and booking platforms.
Environmental groups welcomed the move but urged regulators to go further by implementing stricter reduction targets.
Industry representatives said they are committed to sustainable aviation fuel investments and fleet modernisation but cautioned that rapid regulatory shifts must consider operational realities.
The CAA indicated that compliance monitoring will begin later this year, with penalties possible for misleading or inconsistent reporting.
