Dhaka, Feb. 8 -- Airlines and travel booking firms have been urged to provide UK customers with clear information about the environmental impact of their flights, as the United Kingdom Civil Aviation Authority (UK CAA) published new guidance aimed at improving transparency.

The regulator said airlines and ticket sellers should display estimates of carbon emissions for flights departing from or arriving at UK airports, allowing passengers to make more informed travel decisions at the time of booking.

According to the UK CAA, the guidance seeks to standardize emissions data that some airlines already publish and ensure it is presented in a consistent and comparable manner across platforms.

The authority said it would begin monitoring com...