This is T2RL's 8th edition of the Global Passenger Volumes Analysis Report. The report includes an in-depth analysis of 2023 passenger volumes and historical growth analysis. T2RL's annual research into global passenger volumes highlights 4.39 billion passengers boarded from January to December 2023. These findings are based on analysis of over a thousand carriers and represents a 5% decline from 2019 and 32% growth from 2022.