Question to the Department for Transport:

To ask the Secretary of State for Transport, with reference to her Department’s press release entitled Greener flights ahead for UK aviation, published on 1 January 2025, what estimate her Department has made of the additional cost per passenger flight of the requirement for airlines to use 10% sustainable aviation fuel by 2030.

The press release relates to the sustainable aviation fuel (SAF) mandate which came into force on 1 January. The Department published a Cost Benefit Analysis for the SAF Mandate, alongside the Renewable Transport Fuel Obligations (Sustainable Aviation Fuel) Order 2024 SI No.1187 which introduced the mandate. That Cost Benefit Analysis sets out our analysis of the potential costs and benefits of the policy. Any impact on ticket prices is expected to be within the range of normal year to year changes in air fares.

We continually monitor the market to update our assumptions where necessary. The Mandate has been designed to protect against excessive costs with a built-in review process so the Government can take action if necessary.