![2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels 2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels](https://www.icao.int/Newsroom/News%20and%20Highlight%20Images%202022/01%20-%20NEWS%20-%20COM.01.22%20-%20Air%20Transport%20Results/2022-01-11%20-%20NEWS%20-%20COM.01.22%20-%202021%20Air%20Transport%20Results%20graph%20b.png)
2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels
![Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies](https://pub.mdpi-res.com/aerospace/aerospace-08-00300/article_deploy/html/images/aerospace-08-00300-g007.png?1634205987)
Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies
![2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels 2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels](https://www.icao.int/Newsroom/News%20and%20Highlight%20Images%202022/01%20-%20NEWS%20-%20COM.01.22%20-%20Air%20Transport%20Results/2022-01-11%20-%20NEWS%20-%20COM.01.22%20-%202021%20Air%20Transport%20Results%20graph%20a.png)
2021 global air passenger totals show improvement from 2020, but still only half pre-pandemic levels
![Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies](https://pub.mdpi-res.com/aerospace/aerospace-08-00300/article_deploy/html/images/aerospace-08-00300-g001.png?1634205987)
Aerospace | Free Full-Text | Post-COVID-19 Scenarios of Global Airline Traffic until 2040 That Reflect Airport Capacity Constraints and Mitigation Strategies
![ACI has released the World Airport Traffic Forecasts 2016–2040, marking the beginning of the ACI-NA/World Annual General Assembly, Conference and Exhibition - ACI World ACI has released the World Airport Traffic Forecasts 2016–2040, marking the beginning of the ACI-NA/World Annual General Assembly, Conference and Exhibition - ACI World](https://aci.aero/wp-content/uploads/2021/07/aci_watf_infographic.jpg)