Cames, Chaudry , highlights a critical concern regarding the storage of CO2 In this context, the analysis draws attention to the cost difference between e-fuels and direct air capture and carbon storage (DACCS) options, indicating that this difference ranges between 1.0% and 2.5% of the ticket price by 2050. Importantly, the study suggests that this cost variation is a reasonable burden for passengers to bear. Therefore, it encourages the consideration of the e-fuels option as a more consistent choice with the precautionary principle, which is a fundamental principle in environmental policy. The precautionary principle underscores the need to prioritize actions that prevent potential harm to the environment and human well-being. In essence, the study prompts a critical evaluation of the total costs, emissions, and environmental risks associated with e-fuels and DACCS to make informed decisions regarding sustainable and environmentally responsible aviation practices.