I read last week that 120,000 people a day are flying out of U.S. airports. I found that number surprisingly high.
The only people I could think of who need to fly at this time are couriers transporting organs for transplant.
Who else is flying?
Edit: I should specify that I am indeed pro-lockdown, just wanted to point out that in order to continue our comfortable, convenient lifestyle the cogs need to keep turning.
Examples I know of personally:
My step-mother is flying out to be with her 102 year old father in a couple weeks. My sister-in-law is flying out about the same time to be with her own father. Neither is in a position to wait many months.
20x per year does sound kinda nuts, though :). I imagine you get all the mileage perks. And hopefully upgrades!
A usual international round trip may be 4 flights, so if you visit home 2x/year then that's already 8 flights. Add in a conference per year for another 3 flights, and maybe a few domestic flights for vacation or travel and that's how you end up in that range.