Here is a simple comparison of airlines in two major events. 9/11 vs Covid.
It may surprise you to know that we are seeing the exact same pattern we
saw after 9/11. We can argue if the impact of covid had the same impact
as the aftermath of 9/11. if the industry is even the same as it was back
then if the bailouts are equal etc...
But from a charting...
Delta Air Lines
Gol Linhas Aereas ADR
United Airlines Holdings