International Air Travel as an Indicator of COVID-19 Economic Recovery… if any enterprise is likely to be a leading indicator of economic expectations, it seems that the airline industry is a good candidate
9/11 attacks provide a good reference point for international air travel, it took the aviation industry months to resume normal operations. Much the same can be expected when it comes to post-COVID-19 travel. Fear will diminish interest in travel, aviation systems will be disrupted and new health measures will need to be deployed. Indeed, if anything, the continuing virus-related disruptions may be deeper and longer-lasting than those that followed the 9/11 attacks.
https://www.lawfareblog.com/international-air-travel-indicator-covid-19-economic-recovery
Gert Kamstrup 