Hmmm, this isn't just about folk getting on planes.
Working from home productively and virtual meetings are game changers, virtual meetings will reduce the need to travel, not eliminate it entirely but IMO will impact business travel which is the cash cow for a lot of airlines.
Working from home reduces the need for office space, this will be reflected in reduced values in commercial property, investors will take their money elsewhere and it's unlikely to be in leisure or travel related industries,
that's not even factoring in all the folk who haven't got a job as a result of Covid19.
Also, this is by no means over; globally the number of people with Covid19 is increasing. Even if flights were available, who would go to Mexico at present?